diff --git a/web/src/hooks/use-dataset-nav-request.ts b/web/src/hooks/use-dataset-nav-request.ts
index 9bed7ddc06..578be4a553 100644
--- a/web/src/hooks/use-dataset-nav-request.ts
+++ b/web/src/hooks/use-dataset-nav-request.ts
@@ -19,26 +19,32 @@ import { DatasetNavList } from '@/interfaces/database/dataset-nav';
 import i18n from '@/locales/config';
 import datasetNavService from '@/services/dataset-nav-service';
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
+import { trim } from 'lodash';
 
 import { useKnowledgeBaseId } from './use-knowledge-request';
 
 export const DatasetNavKeys = {
   all: (kbId: string) => ['dataset_nav', kbId] as const,
-  list: (kbId: string) => ['dataset_nav', kbId, 'list'] as const,
+  list: (kbId: string, keywords = '') =>
+    ['dataset_nav', kbId, 'list', keywords] as const,
   children: (kbId: string, name: string) =>
     ['dataset_nav', kbId, 'children', name] as const,
 };
 
-export function useFetchDatasetNav() {
+export function useFetchDatasetNav(keywords = '') {
   const kbId = useKnowledgeBaseId();
+  const trimmedKeywords = trim(keywords);
 
   const { data, isFetching: loading } = useQuery<DatasetNavList | null>({
-    queryKey: DatasetNavKeys.list(kbId),
+    queryKey: DatasetNavKeys.list(kbId, trimmedKeywords),
     initialData: null,
     enabled: !!kbId,
     gcTime: 0,
     queryFn: async () => {
-      const { data } = await datasetNavService.getNav({ datasetId: kbId });
+      const { data } = await datasetNavService.getNav({
+        datasetId: kbId,
+        keywords: trimmedKeywords,
+      });
       return data?.data ?? null;
     },
   });
diff --git a/web/src/pages/dataset/compilation/hooks/use-compilation-nav.ts b/web/src/pages/dataset/compilation/hooks/use-compilation-nav.ts
index e30562bb07..c499f8b436 100644
--- a/web/src/pages/dataset/compilation/hooks/use-compilation-nav.ts
+++ b/web/src/pages/dataset/compilation/hooks/use-compilation-nav.ts
@@ -8,6 +8,7 @@ import { useFetchDocumentStructureGraphById } from '@/hooks/use-document-request
 import { useKnowledgeBaseId } from '@/hooks/use-knowledge-request';
 import { DatasetNavNode } from '@/interfaces/database/dataset-nav';
 import { IStructureGraphTemplate } from '@/interfaces/database/document-structure';
+import { useDebounce } from 'ahooks';
 import { useCallback, useEffect, useState } from 'react';
 
 export interface SelectedNavNode {
@@ -23,7 +24,10 @@ export interface SelectedNavNode {
 
 export function useCompilationNav() {
   const kbId = useKnowledgeBaseId();
-  const { data: navList, loading: navLoading } = useFetchDatasetNav();
+  const [keywords, setKeywords] = useState('');
+  const debouncedKeywords = useDebounce(keywords, { wait: 500 });
+  const { data: navList, loading: navLoading } =
+    useFetchDatasetNav(debouncedKeywords);
   const { deleteNav, loading: deleteNavLoading } = useDeleteDatasetNav();
   const { deleteNavNode, loading: deleteNodeLoading } =
     useDeleteDatasetNavNode();
@@ -125,8 +129,13 @@ export function useCompilationNav() {
     setLoadingDocId(null);
   }, []);
 
-  // Row click selects the node and shows its description on the right,
-  // same as a leaf; expansion is handled separately via handleNodeExpand.
+  const handleKeywordsChange = useCallback(
+    (e: React.ChangeEvent<HTMLInputElement>) => {
+      setKeywords(e.target.value);
+    },
+    [],
+  );
+
   const handleNodeClick = useCallback(
     (node: DatasetNavNode, parentName: string | null) => {
       setSelectedNode({
@@ -214,11 +223,13 @@ export function useCompilationNav() {
   return {
     navList,
     navLoading,
+    keywords,
     childrenMap,
     structureMap,
     selectedNode,
     deleteNavLoading,
     deleteNodeLoading,
+    handleKeywordsChange,
     handleNodeClick,
     handleNodeExpand,
     handleEntityClick,
diff --git a/web/src/pages/dataset/compilation/nav-tree-left-panel.tsx b/web/src/pages/dataset/compilation/nav-tree-left-panel.tsx
index 49e9f373e4..8e206f663b 100644
--- a/web/src/pages/dataset/compilation/nav-tree-left-panel.tsx
+++ b/web/src/pages/dataset/compilation/nav-tree-left-panel.tsx
@@ -1,5 +1,6 @@
 import { ConfirmDeleteDialog } from '@/components/confirm-delete-dialog';
 import { Button } from '@/components/ui/button';
+import { SearchInput } from '@/components/ui/input';
 import { Spin } from '@/components/ui/spin';
 import { TreeView } from '@/components/ui/tree-view';
 import {
@@ -65,10 +66,12 @@ function NavNodeDeleteAction({
 type NavTreeLeftPanelProps = {
   navList: DatasetNavList | null;
   navLoading: boolean;
+  keywords: string;
   childrenMap: Record<string, DatasetNavNode[]>;
   structureMap: Record<string, IStructureGraphTemplate[]>;
   deleteNavLoading: boolean;
   deleteNodeLoading: boolean;
+  onKeywordsChange: (e: React.ChangeEvent<HTMLInputElement>) => void;
   onNodeClick: (node: DatasetNavNode, parentName: string | null) => void;
   onNodeExpand: (node: DatasetNavNode) => void;
   onEntityClick: NavEntityClickHandler;
@@ -79,10 +82,12 @@ type NavTreeLeftPanelProps = {
 export function NavTreeLeftPanel({
   navList,
   navLoading,
+  keywords,
   childrenMap,
   structureMap,
   deleteNavLoading,
   deleteNodeLoading,
+  onKeywordsChange,
   onNodeClick,
   onNodeExpand,
   onEntityClick,
@@ -150,6 +155,10 @@ export function NavTreeLeftPanel({
         )}
       </section>
 
+      <div className="px-3 pt-2">
+        <SearchInput value={keywords} onChange={onKeywordsChange} />
+      </div>
+
       <div className="flex-1 min-h-0 overflow-y-auto px-1 pt-2 pb-3">
         {navLoading && treeData.length === 0 ? (
           <div className="py-8 flex justify-center">
diff --git a/web/src/pages/dataset/compilation/nav-tree-view.tsx b/web/src/pages/dataset/compilation/nav-tree-view.tsx
index 07bc1c102b..d4166aff23 100644
--- a/web/src/pages/dataset/compilation/nav-tree-view.tsx
+++ b/web/src/pages/dataset/compilation/nav-tree-view.tsx
@@ -14,11 +14,13 @@ export function NavTreeView() {
   const {
     navList,
     navLoading,
+    keywords,
     childrenMap,
     structureMap,
     selectedNode,
     deleteNavLoading,
     deleteNodeLoading,
+    handleKeywordsChange,
     handleNodeClick,
     handleNodeExpand,
     handleEntityClick,
@@ -33,10 +35,12 @@ export function NavTreeView() {
           <NavTreeLeftPanel
             navList={navList}
             navLoading={navLoading}
+            keywords={keywords}
             childrenMap={childrenMap}
             structureMap={structureMap}
             deleteNavLoading={deleteNavLoading}
             deleteNodeLoading={deleteNodeLoading}
+            onKeywordsChange={handleKeywordsChange}
             onNodeClick={handleNodeClick}
             onNodeExpand={handleNodeExpand}
             onEntityClick={handleEntityClick}
diff --git a/web/src/services/dataset-nav-service.ts b/web/src/services/dataset-nav-service.ts
index e85beedf65..e4c2c46b75 100644
--- a/web/src/services/dataset-nav-service.ts
+++ b/web/src/services/dataset-nav-service.ts
@@ -18,8 +18,10 @@ import api from '@/utils/api';
 import request from '@/utils/next-request';
 
 const datasetNavService = {
-  getNav: (params: { datasetId: string }) =>
-    request.get(api.getDatasetNav(params.datasetId)),
+  getNav: (params: { datasetId: string; keywords?: string }) =>
+    request.get(api.getDatasetNav(params.datasetId), {
+      params: { keywords: params.keywords || undefined },
+    }),
   getNavChildren: (params: { datasetId: string; name: string }) =>
     request.get(api.getDatasetNavChildren(params.datasetId, params.name)),
   deleteNav: (params: { datasetId: string }) =>