diff --git a/src/components/Breadcrumbs/BaseBreadcrumbs.tsx b/src/components/Breadcrumbs/BaseBreadcrumbs.tsx
new file mode 100644
index 0000000..0c6e1c0
--- /dev/null
+++ b/src/components/Breadcrumbs/BaseBreadcrumbs.tsx
@@ -0,0 +1,85 @@
+import React from 'react';
+import { useNavigate } from 'react-router-dom';
+import { Breadcrumbs, Link, Typography, type SxProps, type Theme } from '@mui/material';
+
+export interface BreadcrumbItem {
+  /** 显示文本 */
+  label: string;
+  /** 导航路径 */
+  path?: string;
+  /** 是否为最后一项（当前页面） */
+  isLast?: boolean;
+  /** 点击事件处理函数，优先级高于path */
+  onClick?: () => void;
+}
+
+export interface BaseBreadcrumbsProps {
+  /** 面包屑项目列表 */
+  items: BreadcrumbItem[];
+  /** 自定义样式 */
+  sx?: SxProps<Theme>;
+  /** 分隔符 */
+  separator?: React.ReactNode;
+  /** 最大显示项目数 */
+  maxItems?: number;
+  /** 链接变体 */
+  linkVariant?: 'body1' | 'body2' | 'caption' | 'subtitle1' | 'subtitle2';
+}
+
+const BaseBreadcrumbs: React.FC<BaseBreadcrumbsProps> = ({
+  items,
+  sx,
+  separator,
+  maxItems,
+  linkVariant = 'body2'
+}) => {
+  const navigate = useNavigate();
+
+  const handleItemClick = (item: BreadcrumbItem) => {
+    if (item.onClick) {
+      item.onClick();
+    } else if (item.path) {
+      navigate(item.path);
+    }
+  };
+
+  return (
+    <Breadcrumbs 
+      sx={{ mb: 2, ...sx }} 
+      separator={separator}
+      maxItems={maxItems}
+    >
+      {items.map((item, index) => {
+        if (item.isLast) {
+          return (
+            <Typography key={index} color="text.primary">
+              {item.label}
+            </Typography>
+          );
+        }
+
+        return (
+          <Link
+            key={index}
+            component="button"
+            variant={linkVariant}
+            onClick={() => handleItemClick(item)}
+            sx={{ 
+              textDecoration: 'none',
+              cursor: 'pointer',
+              border: 'none',
+              background: 'none',
+              padding: 0,
+              font: 'inherit',
+              color: 'inherit'
+            }}
+          >
+            {item.label}
+          </Link>
+        );
+      })}
+    </Breadcrumbs>
+  );
+};
+
+export default BaseBreadcrumbs;
\ No newline at end of file
diff --git a/src/components/Breadcrumbs/index.ts b/src/components/Breadcrumbs/index.ts
new file mode 100644
index 0000000..853fccb
--- /dev/null
+++ b/src/components/Breadcrumbs/index.ts
@@ -0,0 +1,2 @@
+export { default as BaseBreadcrumbs } from './BaseBreadcrumbs';
+export type { BreadcrumbItem, BaseBreadcrumbsProps } from './BaseBreadcrumbs';
\ No newline at end of file
diff --git a/src/pages/chunk/components/ChunkListResult.tsx b/src/pages/chunk/components/ChunkListResult.tsx
index a296d5c..6416d70 100644
--- a/src/pages/chunk/components/ChunkListResult.tsx
+++ b/src/pages/chunk/components/ChunkListResult.tsx
@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { useState, useCallback } from 'react';
 import {
   Box,
   Paper,
@@ -15,16 +15,32 @@ import {
   Avatar,
   IconButton,
   Tooltip,
+  Checkbox,
+  Button,
+  Dialog,
+  DialogTitle,
+  DialogContent,
+  DialogActions,
+  DialogContentText,
+  Toolbar,
+  FormControlLabel,
 } from '@mui/material';
 import {
   Image as ImageIcon,
   TextSnippet as TextIcon,
   Visibility as VisibilityIcon,
   VisibilityOff as VisibilityOffIcon,
+  Delete as DeleteIcon,
+  ToggleOn as EnableIcon,
+  ToggleOff as DisableIcon,
+  SelectAll as SelectAllIcon,
+  Clear as ClearIcon,
 } from '@mui/icons-material';
 import type { IChunk } from '@/interfaces/database/knowledge';
+import knowledgeService from '@/services/knowledge_service';
 
 interface ChunkListResultProps {
+  doc_id: string;
   chunks: IChunk[];
   total: number;
   loading: boolean;
@@ -32,11 +48,92 @@ interface ChunkListResultProps {
   page: number;
   pageSize: number;
   onPageChange: (page: number) => void;
+  onRefresh?: () => void;
   docName?: string;
 }
 
 function ChunkListResult(props: ChunkListResultProps) {
-  const { chunks, total, loading, error, page, pageSize, onPageChange, docName } = props;
+  const { doc_id, chunks, total, loading, error, page, pageSize, onPageChange, onRefresh, docName } = props;
+  
+  // 选择状态
+  const [selectedChunks, setSelectedChunks] = useState<string[]>([]);
+  const [selectAll, setSelectAll] = useState(false);
+  
+  // 操作状态
+  const [operationLoading, setOperationLoading] = useState(false);
+  const [deleteDialogOpen, setDeleteDialogOpen] = useState(false);
+  
+  // 处理单个选择
+  const handleSelectChunk = useCallback((chunkId: string, checked: boolean) => {
+    setSelectedChunks(prev => {
+      if (checked) {
+        return [...prev, chunkId];
+      } else {
+        return prev.filter(id => id !== chunkId);
+      }
+    });
+  }, []);
+  
+  // 处理全选
+  const handleSelectAll = useCallback((checked: boolean) => {
+    setSelectAll(checked);
+    if (checked) {
+      setSelectedChunks(chunks.map(chunk => chunk.chunk_id));
+    } else {
+      setSelectedChunks([]);
+    }
+  }, [chunks]);
+  
+  // 清空选择
+  const handleClearSelection = useCallback(() => {
+    setSelectedChunks([]);
+    setSelectAll(false);
+  }, []);
+  
+  // 启用/禁用chunks
+  const handleToggleChunks = useCallback(async (enable: boolean) => {
+    if (selectedChunks.length === 0) return;
+    
+    try {
+      setOperationLoading(true);
+      await knowledgeService.switchChunk({
+        chunk_ids: selectedChunks,
+        available_int: enable ? 1 : 0,
+        doc_id: doc_id || ''
+      });
+      
+      // delay 800 ms
+      await new Promise(resolve => setTimeout(resolve, 800));
+      // 清空选择并刷新
+      handleClearSelection();
+      onRefresh?.();
+    } catch (err) {
+      console.error('Failed to toggle chunks:', err);
+    } finally {
+      setOperationLoading(false);
+    }
+  }, [selectedChunks, handleClearSelection, onRefresh]);
+  
+  // 删除chunks
+  const handleDeleteChunks = useCallback(async () => {
+    if (selectedChunks.length === 0) return;
+    
+    try {
+      setOperationLoading(true);
+      await knowledgeService.removeChunk({
+        chunk_ids: selectedChunks
+      });
+      
+      // 关闭对话框，清空选择并刷新
+      setDeleteDialogOpen(false);
+      handleClearSelection();
+      onRefresh?.();
+    } catch (err) {
+      console.error('Failed to delete chunks:', err);
+    } finally {
+      setOperationLoading(false);
+    }
+  }, [selectedChunks, handleClearSelection, onRefresh]);
 
   if (loading) {
     return (
@@ -73,50 +170,85 @@ function ChunkListResult(props: ChunkListResultProps) {
   }
 
   const totalPages = Math.ceil(total / pageSize);
+  const enabledCount = chunks.filter(chunk => chunk.available_int === 1).length;
+  const selectedEnabledCount = selectedChunks.filter(id => 
+    chunks.find(chunk => chunk.chunk_id === id)?.available_int === 1
+  ).length;
+  const selectedDisabledCount = selectedChunks.length - selectedEnabledCount;
 
   return (
     <Box>
-      {/* Chunk结果概览 */}
-      <Paper sx={{ p: 3, mb: 3 }}>
-        <Typography variant="h6" gutterBottom>
-          文档Chunk详情
-        </Typography>
-        {docName && (
-          <Typography variant="body2" color="text.secondary" sx={{ mb: 2 }}>
-            文档名称: {docName}
-          </Typography>
-        )}
-        <Grid container spacing={2}>
-          <Grid size={{ xs: 12, sm: 6 }}>
-            <Card>
-              <CardContent>
-                <Typography variant="h4" color="primary">
-                  {total}
-                </Typography>
-                <Typography variant="body2" color="text.secondary">
-                  总Chunk数量
-                </Typography>
-              </CardContent>
-            </Card>
-          </Grid>
-          <Grid size={{ xs: 12, sm: 6 }}>
-            <Card>
-              <CardContent>
-                <Typography variant="h4" color="secondary">
-                  {chunks.filter(chunk => chunk.available_int === 1).length}
-                </Typography>
-                <Typography variant="body2" color="text.secondary">
-                  已启用Chunk
-                </Typography>
-              </CardContent>
-            </Card>
-          </Grid>
-        </Grid>
+      {/* 批量操作工具栏 */}
+      <Paper sx={{ mb: 3 }}>
+        <Toolbar sx={{ px: 2, py: 1 }}>
+          <FormControlLabel
+            control={
+              <Checkbox
+                checked={selectAll}
+                indeterminate={selectedChunks.length > 0 && selectedChunks.length < chunks.length}
+                onChange={(e) => handleSelectAll(e.target.checked)}
+              />
+            }
+            label={`全选 (已选择 ${selectedChunks.length} 个)`}
+          />
+          
+          <Box sx={{ flexGrow: 1 }} />
+          
+          {selectedChunks.length > 0 && (
+            <Stack direction="row" spacing={1}>
+              {selectedDisabledCount > 0 && (
+                <Button
+                  startIcon={<EnableIcon />}
+                  onClick={() => handleToggleChunks(true)}
+                  disabled={operationLoading}
+                  color="success"
+                  variant="outlined"
+                  size="small"
+                >
+                  启用 ({selectedDisabledCount})
+                </Button>
+              )}
+              
+              {selectedEnabledCount > 0 && (
+                <Button
+                  startIcon={<DisableIcon />}
+                  onClick={() => handleToggleChunks(false)}
+                  disabled={operationLoading}
+                  color="warning"
+                  variant="outlined"
+                  size="small"
+                >
+                  禁用 ({selectedEnabledCount})
+                </Button>
+              )}
+              
+              <Button
+                startIcon={<DeleteIcon />}
+                onClick={() => setDeleteDialogOpen(true)}
+                disabled={operationLoading}
+                color="error"
+                variant="outlined"
+                size="small"
+              >
+                删除 ({selectedChunks.length})
+              </Button>
+              
+              <Button
+                startIcon={<ClearIcon />}
+                onClick={handleClearSelection}
+                variant="outlined"
+                size="small"
+              >
+                清空选择
+              </Button>
+            </Stack>
+          )}
+        </Toolbar>
       </Paper>
 
       {/* Chunk列表 */}
       <Paper sx={{ p: 3, mb: 3 }}>
-        <Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', mb: 2 }}>
+        <Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', mb: 3 }}>
           <Typography variant="h6">
             Chunk列表 (第 {page} 页，共 {totalPages} 页)
           </Typography>
@@ -125,7 +257,7 @@ function ChunkListResult(props: ChunkListResultProps) {
           </Typography>
         </Box>
 
-        <Grid container spacing={3}>
+        <Grid container spacing={2}>
           {chunks.map((chunk, index) => (
             <Grid size={12} key={chunk.chunk_id}>
               <Card
@@ -133,38 +265,50 @@ function ChunkListResult(props: ChunkListResultProps) {
                 sx={{
                   transition: 'all 0.2s ease-in-out',
                   '&:hover': {
-                    boxShadow: 3,
-                    transform: 'translateY(-2px)',
+                    boxShadow: 2,
                   },
-                  border: chunk.available_int === 1 ? '2px solid' : '1px solid',
-                  borderColor: chunk.available_int === 1 ? 'success.main' : 'grey.300',
+                  border: selectedChunks.includes(chunk.chunk_id) ? '2px solid' : '1px solid',
+                  borderColor: selectedChunks.includes(chunk.chunk_id) 
+                    ? 'primary.main' 
+                    : chunk.available_int === 1 
+                    ? 'success.light' 
+                    : 'grey.300',
+                  backgroundColor: selectedChunks.includes(chunk.chunk_id) ? 'action.selected' : 'background.paper',
                 }}
               >
-                <CardContent sx={{ p: 3 }}>
+                <CardContent sx={{ p: 2 }}>
                   {/* 头部信息 */}
                   <Box sx={{ display: 'flex', alignItems: 'center', mb: 2 }}>
+                    <Checkbox
+                      checked={selectedChunks.includes(chunk.chunk_id)}
+                      onChange={(e) => handleSelectChunk(chunk.chunk_id, e.target.checked)}
+                      sx={{ mr: 1 }}
+                    />
+                    
                     <Avatar
                       sx={{
                         bgcolor: chunk.available_int === 1 ? 'success.main' : 'grey.400',
                         mr: 2,
-                        width: 40,
-                        height: 40,
+                        width: 32,
+                        height: 32,
                       }}
                     >
-                      <TextIcon />
+                      <TextIcon fontSize="small" />
                     </Avatar>
+                    
                     <Box sx={{ flexGrow: 1 }}>
-                      <Typography variant="h6" fontWeight="bold" color="text.primary">
+                      <Typography variant="subtitle1" fontWeight="medium">
                         Chunk #{((page - 1) * pageSize) + index + 1}
                       </Typography>
                       <Typography variant="caption" color="text.secondary">
                         ID: {chunk.chunk_id}
                       </Typography>
                     </Box>
+                    
                     <Stack direction="row" spacing={1} alignItems="center">
                       {chunk.image_id && (
                         <Tooltip title="包含图片">
-                          <Avatar sx={{ bgcolor: 'info.main', width: 32, height: 32 }}>
+                          <Avatar sx={{ bgcolor: 'info.main', width: 24, height: 24 }}>
                             <ImageIcon fontSize="small" />
                           </Avatar>
                         </Tooltip>
@@ -179,39 +323,27 @@ function ChunkListResult(props: ChunkListResultProps) {
                     </Stack>
                   </Box>
 
-                  <Divider sx={{ mb: 2 }} />
-
                   {/* 内容区域 */}
-                  <Box sx={{ mb: 3 }}>
-                    <Typography variant="subtitle2" color="text.secondary" sx={{ mb: 1 }}>
+                  <Box sx={{ mb: 2 }}>
+                    <Typography variant="caption" color="text.secondary" sx={{ mb: 1, display: 'block' }}>
                       内容预览
                     </Typography>
                     <Paper
                       variant="outlined"
                       sx={{
-                        p: 2,
-                        maxHeight: '200px',
+                        p: 1.5,
+                        maxHeight: '150px',
                         overflow: 'auto',
                         backgroundColor: 'grey.50',
-                        borderRadius: 2,
-                        '&::-webkit-scrollbar': {
-                          width: '6px',
-                        },
-                        '&::-webkit-scrollbar-track': {
-                          backgroundColor: 'grey.100',
-                          borderRadius: '3px',
-                        },
-                        '&::-webkit-scrollbar-thumb': {
-                          backgroundColor: 'grey.400',
-                          borderRadius: '3px',
-                        },
+                        borderRadius: 1,
+                        fontSize: '0.875rem',
+                        lineHeight: 1.5,
                       }}
                     >
                       <Typography
                         variant="body2"
                         sx={{
                           whiteSpace: 'pre-wrap',
-                          lineHeight: 1.6,
                           color: 'text.primary',
                         }}
                       >
@@ -222,17 +354,17 @@ function ChunkListResult(props: ChunkListResultProps) {
 
                   {/* 图片显示区域 */}
                   {chunk.image_id && (
-                    <Box sx={{ mb: 3 }}>
-                      <Typography variant="subtitle2" color="text.secondary" sx={{ mb: 1 }}>
+                    <Box sx={{ mb: 2 }}>
+                      <Typography variant="caption" color="text.secondary" sx={{ mb: 1, display: 'block' }}>
                         相关图片
                       </Typography>
-                      <Paper
-                        variant="outlined"
+                      <Box
                         sx={{
-                          p: 2,
-                          borderRadius: 2,
-                          backgroundColor: 'background.paper',
                           textAlign: 'center',
+                          p: 1,
+                          border: '1px solid',
+                          borderColor: 'grey.300',
+                          borderRadius: 1,
                         }}
                       >
                         <Box
@@ -241,33 +373,32 @@ function ChunkListResult(props: ChunkListResultProps) {
                           alt="Chunk相关图片"
                           sx={{
                             maxWidth: '100%',
-                            maxHeight: '300px',
+                            maxHeight: '200px',
                             borderRadius: 1,
                             objectFit: 'contain',
-                            boxShadow: 1,
                           }}
                           onError={(e) => {
                             const target = e.target as HTMLImageElement;
                             target.style.display = 'none';
                           }}
                         />
-                      </Paper>
+                      </Box>
                     </Box>
                   )}
 
                   {/* 关键词区域 */}
                   {((chunk.important_kwd ?? []).length > 0 || (chunk.question_kwd ?? []).length > 0 || (chunk.tag_kwd ?? []).length > 0) && (
-                    <Box sx={{ mb: 2 }}>
-                      <Typography variant="subtitle2" color="text.secondary" sx={{ mb: 2 }}>
+                    <Box>
+                      <Typography variant="caption" color="text.secondary" sx={{ mb: 1, display: 'block' }}>
                         关键词信息
                       </Typography>
 
-                      {chunk.important_kwd && chunk.important_kwd.length > 0 && (
-                        <Box sx={{ mb: 2 }}>
-                          <Typography variant="caption" color="text.secondary" sx={{ mb: 1, display: 'block' }}>
-                            重要关键词
-                          </Typography>
-                          <Box sx={{ display: 'flex', flexWrap: 'wrap', gap: 1 }}>
+                      <Stack spacing={1}>
+                        {chunk.important_kwd && chunk.important_kwd.length > 0 && (
+                          <Box>
+                            <Typography variant="caption" color="text.secondary" sx={{ mr: 1 }}>
+                              重要:
+                            </Typography>
                             {chunk.important_kwd.map((keyword, kwdIndex) => (
                               <Chip
                                 key={kwdIndex}
@@ -275,19 +406,17 @@ function ChunkListResult(props: ChunkListResultProps) {
                                 size="small"
                                 variant="filled"
                                 color="primary"
-                                sx={{ fontWeight: 'medium' }}
+                                sx={{ mr: 0.5, mb: 0.5, fontSize: '0.75rem' }}
                               />
                             ))}
                           </Box>
-                        </Box>
-                      )}
+                        )}
 
-                      {chunk.question_kwd && chunk.question_kwd.length > 0 && (
-                        <Box sx={{ mb: 2 }}>
-                          <Typography variant="caption" color="text.secondary" sx={{ mb: 1, display: 'block' }}>
-                            问题关键词
-                          </Typography>
-                          <Box sx={{ display: 'flex', flexWrap: 'wrap', gap: 1 }}>
+                        {chunk.question_kwd && chunk.question_kwd.length > 0 && (
+                          <Box>
+                            <Typography variant="caption" color="text.secondary" sx={{ mr: 1 }}>
+                              问题:
+                            </Typography>
                             {chunk.question_kwd.map((keyword, kwdIndex) => (
                               <Chip
                                 key={kwdIndex}
@@ -295,19 +424,17 @@ function ChunkListResult(props: ChunkListResultProps) {
                                 size="small"
                                 variant="filled"
                                 color="secondary"
-                                sx={{ fontWeight: 'medium' }}
+                                sx={{ mr: 0.5, mb: 0.5, fontSize: '0.75rem' }}
                               />
                             ))}
                           </Box>
-                        </Box>
-                      )}
+                        )}
 
-                      {chunk.tag_kwd && chunk.tag_kwd.length > 0 && (
-                        <Box sx={{ mb: 2 }}>
-                          <Typography variant="caption" color="text.secondary" sx={{ mb: 1, display: 'block' }}>
-                            标签关键词
-                          </Typography>
-                          <Box sx={{ display: 'flex', flexWrap: 'wrap', gap: 1 }}>
+                        {chunk.tag_kwd && chunk.tag_kwd.length > 0 && (
+                          <Box>
+                            <Typography variant="caption" color="text.secondary" sx={{ mr: 1 }}>
+                              标签:
+                            </Typography>
                             {chunk.tag_kwd.map((keyword, kwdIndex) => (
                               <Chip
                                 key={kwdIndex}
@@ -315,25 +442,12 @@ function ChunkListResult(props: ChunkListResultProps) {
                                 size="small"
                                 variant="filled"
                                 color="info"
-                                sx={{ fontWeight: 'medium' }}
+                                sx={{ mr: 0.5, mb: 0.5, fontSize: '0.75rem' }}
                               />
                             ))}
                           </Box>
-                        </Box>
-                      )}
-                    </Box>
-                  )}
-
-                  {/* 位置信息 */}
-                  {chunk.positions && chunk.positions.length > 0 && (
-                    <Box sx={{ mt: 2, pt: 2, borderTop: '1px solid', borderColor: 'grey.200' }}>
-                      <Chip
-                        label={`位置信息: ${chunk.positions.length} 个位置点`}
-                        size="small"
-                        variant="outlined"
-                        color="default"
-                        sx={{ fontWeight: 'medium' }}
-                      />
+                        )}
+                      </Stack>
                     </Box>
                   )}
                 </CardContent>
@@ -356,6 +470,31 @@ function ChunkListResult(props: ChunkListResultProps) {
           </Box>
         )}
       </Paper>
+
+      {/* 删除确认对话框 */}
+      <Dialog
+        open={deleteDialogOpen}
+        onClose={() => setDeleteDialogOpen(false)}
+      >
+        <DialogTitle>确认删除</DialogTitle>
+        <DialogContent>
+          <DialogContentText>
+            确定要删除选中的 {selectedChunks.length} 个chunk吗？此操作不可撤销。
+          </DialogContentText>
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={() => setDeleteDialogOpen(false)}>
+            取消
+          </Button>
+          <Button 
+            onClick={handleDeleteChunks} 
+            color="error" 
+            disabled={operationLoading}
+          >
+            {operationLoading ? '删除中...' : '确认删除'}
+          </Button>
+        </DialogActions>
+      </Dialog>
     </Box>
   );
 }
diff --git a/src/pages/chunk/document-preview.tsx b/src/pages/chunk/document-preview.tsx
index 3f5d946..603d7a0 100644
--- a/src/pages/chunk/document-preview.tsx
+++ b/src/pages/chunk/document-preview.tsx
@@ -1,4 +1,4 @@
-import React, { useState, useEffect } from 'react';
+import React, { useState, useEffect, useRef } from 'react';
 import { useParams, useNavigate } from 'react-router-dom';
 import {
   Box,
@@ -7,8 +7,6 @@ import {
   CircularProgress,
   Alert,
   Button,
-  Breadcrumbs,
-  Link,
   Card,
   CardContent,
   CardMedia,
@@ -20,6 +18,7 @@ import {
 } from '@mui/icons-material';
 import knowledgeService from '@/services/knowledge_service';
 import type { IKnowledge, IKnowledgeFile } from '@/interfaces/database/knowledge';
+import KnowledgeBreadcrumbs from '@/pages/knowledge/components/KnowledgeBreadcrumbs';
 
 interface DocumentPreviewProps {}
 
@@ -34,6 +33,9 @@ function DocumentPreview(props: DocumentPreviewProps) {
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
   const [fileLoading, setFileLoading] = useState(false);
+  
+  // 用于取消请求的AbortController
+  const abortControllerRef = useRef<AbortController | null>(null);
 
   // 获取知识库和文档信息
   useEffect(() => {
@@ -60,6 +62,9 @@ function DocumentPreview(props: DocumentPreviewProps) {
         if (docResponse.data.data?.length > 0) {
           setDocumentObj(docResponse.data.data[0]);
         }
+        
+        // 自动开始预览文件
+        loadDocumentFile();
       } catch (err) {
         console.error('获取数据失败:', err);
         setError('获取数据失败，请稍后重试');
@@ -79,7 +84,19 @@ function DocumentPreview(props: DocumentPreviewProps) {
       setFileLoading(true);
       setError(null);
       
-      const fileResponse = await knowledgeService.getDocumentFile({ doc_id });
+      // 取消之前的请求
+      if (abortControllerRef.current) {
+        abortControllerRef.current.abort();
+      }
+      
+      // 创建新的AbortController
+      abortControllerRef.current = new AbortController();
+      
+      const fileResponse = await knowledgeService.getDocumentFile({ 
+        doc_id
+      }, {
+        signal: abortControllerRef.current.signal
+      });
       
       if (fileResponse.data instanceof Blob) {
         setDocumentFile(fileResponse.data);
@@ -88,20 +105,27 @@ function DocumentPreview(props: DocumentPreviewProps) {
       } else {
         setError('文件格式不支持预览');
       }
-    } catch (err) {
-      console.error('获取文档文件失败:', err);
-      setError('获取文档文件失败，请稍后重试');
+    } catch (err: any) {
+      console.log('err', err);
+      if (err.name !== 'AbortError' && err.name !== 'CanceledError') {
+        console.error('获取文档文件失败:', err);
+        setError('获取文档文件失败，请稍后重试');
+      }
     } finally {
       setFileLoading(false);
     }
   };
 
-  // 清理文件URL
+  // 清理fileUrl
   useEffect(() => {
     return () => {
       if (fileUrl) {
         URL.revokeObjectURL(fileUrl);
       }
+      // 组件卸载时取消正在进行的请求
+      if (abortControllerRef.current) {
+        abortControllerRef.current.abort();
+      }
     };
   }, [fileUrl]);
 
@@ -119,6 +143,17 @@ function DocumentPreview(props: DocumentPreviewProps) {
 
   // 返回上一页
   const handleGoBack = () => {
+    // 取消正在进行的请求
+    if (abortControllerRef.current) {
+      abortControllerRef.current.abort();
+    }
+    
+    // 清理文件URL
+    if (fileUrl) {
+      URL.revokeObjectURL(fileUrl);
+      setFileUrl('');
+    }
+    
     navigate(-1);
   };
 
@@ -204,33 +239,27 @@ function DocumentPreview(props: DocumentPreviewProps) {
   return (
     <Box sx={{ p: 3 }}>
       {/* 面包屑导航 */}
-      <Breadcrumbs sx={{ mb: 2 }}>
-        <Link
-          component="button"
-          variant="body2"
-          onClick={() => navigate('/knowledge')}
-          sx={{ textDecoration: 'none' }}
-        >
-          知识库
-        </Link>
-        <Link
-          component="button"
-          variant="body2"
-          onClick={() => navigate(`/knowledge/${kb_id}`)}
-          sx={{ textDecoration: 'none' }}
-        >
-          {kb?.name || '知识库详情'}
-        </Link>
-        <Link
-          component="button"
-          variant="body2"
-          onClick={() => navigate(`/knowledge/${kb_id}/document/${doc_id}/chunks`)}
-          sx={{ textDecoration: 'none' }}
-        >
-          文档分块
-        </Link>
-        <Typography color="text.primary">文件预览</Typography>
-      </Breadcrumbs>
+      <KnowledgeBreadcrumbs 
+        kbItems={[
+          {
+            label: '知识库',
+            path: '/knowledge'
+          },
+          {
+            label: kb?.name || '知识库详情',
+            path: `/knowledge/${kb_id}`
+          }
+        ]}
+        extraItems={[
+          {
+            label: documentObj?.name || '文档详情',
+            path: `/chunk/parsed-result?kb_id=${kb_id}&doc_id=${doc_id}`
+          },
+          {
+            label: '文件预览'
+          }
+        ]}
+      />
 
       {/* 页面标题和操作按钮 */}
       <Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', mb: 3 }}>
@@ -254,17 +283,6 @@ function DocumentPreview(props: DocumentPreviewProps) {
             返回
           </Button>
           
-          {!fileUrl && (
-            <Button
-              startIcon={<VisibilityIcon />}
-              onClick={loadDocumentFile}
-              variant="contained"
-              disabled={fileLoading}
-            >
-              {fileLoading ? '加载中...' : '预览文件'}
-            </Button>
-          )}
-          
           {fileUrl && (
             <Button
               startIcon={<DownloadIcon />}
diff --git a/src/pages/chunk/parsed-result.tsx b/src/pages/chunk/parsed-result.tsx
index bc9e2b7..23e38ca 100644
--- a/src/pages/chunk/parsed-result.tsx
+++ b/src/pages/chunk/parsed-result.tsx
@@ -3,19 +3,20 @@ import { useSearchParams, useNavigate } from "react-router-dom";
 import {
   Box,
   Typography,
-  Breadcrumbs,
-  Link,
   TextField,
   InputAdornment,
   Paper,
   Alert,
-  Button
+  Button,
+  Card,
+  CardContent
 } from "@mui/material";
 import { Search as SearchIcon, Visibility as VisibilityIcon } from '@mui/icons-material';
 import { useChunkList } from '@/hooks/chunk-hooks';
 import ChunkListResult from './components/ChunkListResult';
 import knowledgeService from '@/services/knowledge_service';
 import type { IKnowledge, IKnowledgeFile } from '@/interfaces/database/knowledge';
+import KnowledgeBreadcrumbs from '@/pages/knowledge/components/KnowledgeBreadcrumbs';
 
 function ChunkParsedResult() {
   const [searchParams] = useSearchParams();
@@ -53,6 +54,7 @@ function ChunkParsedResult() {
         // 获取知识库信息
         const kbResponse = await knowledgeService.getKnowledgeDetail({ kb_id });
         if (kbResponse.data.code === 0) {
+          console.log('KnowledgeBase:', kbResponse.data);
           setKnowledgeBase(kbResponse.data.data);
         }
 
@@ -100,34 +102,23 @@ function ChunkParsedResult() {
   return (
     <Box sx={{ p: 3 }}>
       {/* 面包屑导航 */}
-      <Box sx={{ mb: 3 }}>
-        <Breadcrumbs>
-          <Link
-            color="inherit"
-            href="#"
-            onClick={(e) => {
-              e.preventDefault();
-              navigate('/knowledge');
-            }}
-            sx={{ display: 'flex', alignItems: 'center', gap: 0.5 }}
-          >
-            知识库列表
-          </Link>
-          <Link
-            color="inherit"
-            href="#"
-            onClick={(e) => {
-              e.preventDefault();
-              navigate(`/knowledge/${kb_id}`);
-            }}
-          >
-            {knowledgeBase?.name || '知识库详情'}
-          </Link>
-          <Typography color="text.primary">
-            {document?.name || '文档Chunk详情'}
-          </Typography>
-        </Breadcrumbs>
-      </Box>
+      <KnowledgeBreadcrumbs
+        kbItems={[
+          {
+            label: '知识库',
+            path: '/knowledge'
+          },
+          {
+            label: knowledgeBase?.name || '知识库详情',
+            path: `/knowledge/${kb_id}`
+          }
+        ]}
+        extraItems={[
+          {
+            label: document?.name || '文档详情'
+          },
+        ]}
+      />
       {/* 页面标题和文档信息 */}
       <Paper sx={{ p: 3, mb: 3 }}>
         <Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'flex-start', mb: 2 }}>
@@ -139,6 +130,16 @@ function ChunkParsedResult() {
               查看文档 "{document?.name}" 的所有chunk数据
             </Typography>
           </Box>
+          <Card>
+            <CardContent sx={{ textAlign: 'center' }}>
+              <Typography variant="h4" color="primary">
+                {total}
+              </Typography>
+              <Typography variant="body2" color="text.secondary">
+                总Chunk数量
+              </Typography>
+            </CardContent>
+          </Card>
           <Button
             variant="outlined"
             startIcon={<VisibilityIcon />}
@@ -169,6 +170,7 @@ function ChunkParsedResult() {
 
       {/* Chunk列表结果 */}
       <ChunkListResult
+        doc_id={doc_id}
         chunks={chunks}
         total={total}
         loading={loading}
@@ -176,6 +178,7 @@ function ChunkParsedResult() {
         page={currentPage}
         pageSize={pageSize}
         onPageChange={setCurrentPage}
+        onRefresh={refresh}
         docName={document?.name}
       />
     </Box>
diff --git a/src/pages/knowledge/components/KnowledgeBreadcrumbs.tsx b/src/pages/knowledge/components/KnowledgeBreadcrumbs.tsx
index f1a5435..1e80692 100644
--- a/src/pages/knowledge/components/KnowledgeBreadcrumbs.tsx
+++ b/src/pages/knowledge/components/KnowledgeBreadcrumbs.tsx
@@ -1,88 +1,35 @@
 import React from 'react';
-import { useLocation, useNavigate, useParams } from 'react-router-dom';
-import { Breadcrumbs, Link, Typography } from '@mui/material';
-import type { IKnowledge } from '@/interfaces/database/knowledge';
+import type { SxProps, Theme } from '@mui/material';
+import { BaseBreadcrumbs, type BreadcrumbItem } from '@/components/Breadcrumbs';
 
 interface KnowledgeBreadcrumbsProps {
-  knowledge?: IKnowledge | null;
-  sx?: object;
+  sx?: SxProps<Theme>;
+  /** 知识库相关的面包屑项目，可以完全自定义 */
+  kbItems?: BreadcrumbItem[];
+  /** 额外的面包屑项目，会添加到kbItems之后 */
+  extraItems?: BreadcrumbItem[];
 }
 
-const KnowledgeBreadcrumbs: React.FC<KnowledgeBreadcrumbsProps> = ({ knowledge, sx }) => {
-  const location = useLocation();
-  const navigate = useNavigate();
-  const { id } = useParams<{ id: string }>();
-
-  // 解析当前路径
-  const pathSegments = location.pathname.split('/').filter(Boolean);
+const KnowledgeBreadcrumbs: React.FC<KnowledgeBreadcrumbsProps> = ({ 
+  sx,
+  kbItems = [],
+  extraItems = []
+}) => {
+  // 合并所有面包屑项目
+  const allItems = [...kbItems, ...extraItems];
   
-  // 生成面包屑项
-  const breadcrumbItems = [];
-
-  // 第一层：知识库列表
-  breadcrumbItems.push({
-    label: '知识库',
-    path: '/knowledge',
-    isLast: false
-  });
-
-  // 第二层：知识库详情（如果有id）
-  if (id && knowledge) {
-    const isDetailPage = pathSegments.length === 2; // /knowledge/:id
-    breadcrumbItems.push({
-      label: knowledge.name,
-      path: `/knowledge/${id}`,
-      isLast: isDetailPage
-    });
-
-    // 第三层：设置或测试页面
-    if (pathSegments.length === 3) {
-      const lastSegment = pathSegments[2];
-      let label = '';
-      
-      switch (lastSegment) {
-        case 'setting':
-          label = '设置';
-          break;
-        case 'testing':
-          label = '测试';
-          break;
-        default:
-          label = lastSegment;
-      }
-
-      breadcrumbItems.push({
-        label,
-        path: location.pathname,
-        isLast: true
-      });
-    }
-  }
+  // 确保最后一个项目被标记为最后一项
+  const breadcrumbItems = allItems.map((item, index) => ({
+    ...item,
+    isLast: index === allItems.length - 1
+  }));
 
   return (
-    <Breadcrumbs sx={{ mb: 2, ...sx }}>
-      {breadcrumbItems.map((item, index) => {
-        if (item.isLast) {
-          return (
-            <Typography key={index} color="text.primary">
-              {item.label}
-            </Typography>
-          );
-        }
-
-        return (
-          <Link
-            key={index}
-            component="button"
-            variant="body1"
-            onClick={() => navigate(item.path)}
-            sx={{ textDecoration: 'none' }}
-          >
-            {item.label}
-          </Link>
-        );
-      })}
-    </Breadcrumbs>
+    <BaseBreadcrumbs 
+      items={breadcrumbItems}
+      sx={sx}
+      linkVariant="body1"
+    />
   );
 };
 
diff --git a/src/pages/knowledge/create.tsx b/src/pages/knowledge/create.tsx
index f6cf8f4..3b45f49 100644
--- a/src/pages/knowledge/create.tsx
+++ b/src/pages/knowledge/create.tsx
@@ -212,7 +212,7 @@ function KnowledgeBaseCreate() {
               <Divider sx={{ my: 3 }} />
 
               {/* 操作按钮 */}
-               <Box sx={{ display: 'flex', justifyContent: 'flex-end'  }}>
+               <Box sx={{ display: 'flex', justifyContent: 'flex-end' }}>
                  <Box sx={{ display: 'flex', gap: 2 }}>
                    {activeStep === 0 && (
                      <Button
diff --git a/src/pages/knowledge/detail.tsx b/src/pages/knowledge/detail.tsx
index 7a85fd0..f3506c6 100644
--- a/src/pages/knowledge/detail.tsx
+++ b/src/pages/knowledge/detail.tsx
@@ -275,7 +275,18 @@ function KnowledgeBaseDetail() {
   return (
     <Box sx={{ p: 3 }}>
       {/* 面包屑导航 */}
-      <KnowledgeBreadcrumbs knowledge={knowledgeBase} />
+      <KnowledgeBreadcrumbs 
+        kbItems={[
+          {
+            label: '知识库',
+            path: '/knowledge'
+          },
+          {
+            label: knowledgeBase?.name || '知识库详情',
+            path: `/knowledge/${id}`
+          }
+        ]}
+      />
 
       {/* 知识库信息卡片 */}
       <KnowledgeInfoCard knowledgeBase={knowledgeBase} />
diff --git a/src/pages/knowledge/setting.tsx b/src/pages/knowledge/setting.tsx
index fbf4bc1..5a75029 100644
--- a/src/pages/knowledge/setting.tsx
+++ b/src/pages/knowledge/setting.tsx
@@ -157,7 +157,21 @@ function KnowledgeBaseSetting() {
   return (
     <MainContainer>
       {/* 面包屑导航 */}
-      <KnowledgeBreadcrumbs knowledge={knowledge} />
+      <KnowledgeBreadcrumbs 
+        kbItems={[
+          {
+            label: '知识库',
+            path: '/knowledge'
+          },
+          {
+            label: knowledge?.name || '知识库详情',
+            path: `/knowledge/${id}`
+          },
+          {
+            label: '设置'
+          }
+        ]}
+      />
 
       <Box sx={{ mb: 3 }}>
         <Typography variant="h4" gutterBottom>
diff --git a/src/pages/knowledge/testing.tsx b/src/pages/knowledge/testing.tsx
index 622c1fe..bfc8cb8 100644
--- a/src/pages/knowledge/testing.tsx
+++ b/src/pages/knowledge/testing.tsx
@@ -236,7 +236,21 @@ function KnowledgeBaseTesting() {
     <Container maxWidth="lg" sx={{ py: 4 }}>
 
       {/* 面包屑导航 */}
-      <KnowledgeBreadcrumbs knowledge={knowledgeDetail} />
+      <KnowledgeBreadcrumbs 
+        kbItems={[
+          {
+            label: '知识库',
+            path: '/knowledge'
+          },
+          {
+            label: knowledgeDetail?.name || '知识库详情',
+            path: `/knowledge/${id}`
+          },
+          {
+            label: '测试'
+          }
+        ]}
+      />
 
       <Box sx={{ mb: 3 }}>
         <Typography variant="h4" gutterBottom>
diff --git a/src/services/knowledge_service.ts b/src/services/knowledge_service.ts
index 91888cf..b69aafe 100644
--- a/src/services/knowledge_service.ts
+++ b/src/services/knowledge_service.ts
@@ -1,5 +1,6 @@
 import api from './api';
 import request, { post } from '@/utils/request';
+import type { AxiosRequestConfig } from 'axios';
 import type {
   IFetchKnowledgeListRequestBody,
   IFetchKnowledgeListRequestParams,
@@ -137,9 +138,10 @@ const knowledgeService = {
   },
 
   // 获取文档文件
-  getDocumentFile: (params: { doc_id: string }) => {
+  getDocumentFile: (params: { doc_id: string }, config?: AxiosRequestConfig) => {
     return request.get(`${api.get_document_file}/${params.doc_id}`, {
-      responseType: 'blob'
+      responseType: 'blob',
+      ...config
     });
   },
 
@@ -185,8 +187,8 @@ const knowledgeService = {
     return request.get(api.get_chunk, { params });
   },
 
-  // 切换分块状态
-  switchChunk: (data: { chunk_ids: string[]; available_int: number }) => {
+  // 切换分块状态 available_int 是否启用，0：未启用，1：启用
+  switchChunk: (data: { chunk_ids: string[]; available_int: number, doc_id: string }) => {
     return post(api.switch_chunk, data);
   },
 
diff --git a/src/utils/request.ts b/src/utils/request.ts
index 9c60389..c94d963 100644
--- a/src/utils/request.ts
+++ b/src/utils/request.ts
@@ -136,13 +136,12 @@ request.interceptors.response.use(
     } else if (data?.code !== 0) {
       snackbar.error(data?.message);
     }
-
     return response;
   },
   (error) => {
     // 处理网络错误
     if (error.message === FAILED_TO_FETCH || !error.response) {
-      notification.error(i18n.t('message.networkAnomaly'), i18n.t('message.networkAnomalyDescription'));
+      // notification.error(i18n.t('message.networkAnomaly'), i18n.t('message.networkAnomalyDescription'));
     } else if (error.response) {
       const { status, statusText } = error.response;
       const errorText = RetcodeMessage[status as ResultCode] || statusText;