diff --git a/backend/app/search_client.py b/backend/app/search_client.py
index f9f0bd1..0a2aa7d 100644
--- a/backend/app/search_client.py
+++ b/backend/app/search_client.py
@@ -36,14 +36,21 @@ class SearchClient:
             "highlightPostTag": "</em>",
             "attributesToCrop": ["content"],
             "cropLength": 30,
+            "showMatchesPosition": True,
         })
         results = []
         for hit in response.get("hits", []):
             formatted = hit.get("_formatted", {})
+            line_number = None
+            matches = hit.get("_matchesPosition", {}).get("content", [])
+            if matches and hit.get("content"):
+                start = matches[0]["start"]
+                line_number = hit["content"][:start].count("\n") + 1
             results.append({
                 "key": hit["key"],
                 "title": hit["title"],
                 "path": hit["path"],
                 "snippet": formatted.get("content", hit.get("content", "")),
+                "lineNumber": line_number,
             })
         return results
diff --git a/frontend/src/api/client.ts b/frontend/src/api/client.ts
index db08fe7..bdf19d8 100644
--- a/frontend/src/api/client.ts
+++ b/frontend/src/api/client.ts
@@ -104,6 +104,7 @@ export interface SearchResult {
   title: string;
   path: string;
   snippet: string;
+  lineNumber: number | null;
 }
 
 export interface SearchResponse {
diff --git a/frontend/src/components/SearchResults.tsx b/frontend/src/components/SearchResults.tsx
index ec58ef3..c87a653 100644
--- a/frontend/src/components/SearchResults.tsx
+++ b/frontend/src/components/SearchResults.tsx
@@ -32,6 +32,9 @@ export default function SearchResults({ results, query, onJumpToResult }: Search
           <div className="result-body">
             <div className="result-path">
               <span className="result-title">{result.title}</span>
+              {result.lineNumber != null && (
+                <span className="result-line">第 {result.lineNumber} 行</span>
+              )}
             </div>
             <div className="result-snippet" dangerouslySetInnerHTML={{ __html: result.snippet }} />
           </div>
diff --git a/frontend/src/styles.css b/frontend/src/styles.css
index c7a8abc..8ba3ad8 100644
--- a/frontend/src/styles.css
+++ b/frontend/src/styles.css
@@ -664,6 +664,17 @@ body {
   color: var(--ink);
 }
 
+.result-line {
+  font-family: 'IBM Plex Mono', monospace;
+  font-size: 11px;
+  color: var(--ash);
+  background: var(--paper-alt);
+  border: 1px solid var(--rule);
+  border-radius: 4px;
+  padding: 1px 6px;
+  white-space: nowrap;
+}
+
 .result-snippet {
   font-size: 12.5px;
   color: var(--ash);
diff --git a/frontend/tests/App.test.tsx b/frontend/tests/App.test.tsx
index fe8ec53..b9cf783 100644
--- a/frontend/tests/App.test.tsx
+++ b/frontend/tests/App.test.tsx
@@ -85,7 +85,7 @@ test('selecting a file from the tree loads it into the editor', async () => {
 test('searching shows the results overlay, and clicking a result opens the document', async () => {
   vi.mocked(listDocuments).mockResolvedValue({ folders: [], files: [] });
   vi.mocked(search).mockResolvedValue({
-    results: [{ key: '产品文档/架构设计.md', title: '架构设计.md', path: '产品文档', snippet: '...<em>检索</em>...' }],
+    results: [{ key: '产品文档/架构设计.md', title: '架构设计.md', path: '产品文档', snippet: '...<em>检索</em>...', lineNumber: 5 }],
   });
   vi.mocked(getDocument).mockResolvedValue({
     key: '产品文档/架构设计.md',
@@ -121,7 +121,7 @@ test('searching shows the results overlay, and clicking a result opens the docum
 test('jumping to a search result clears the search input so it does not show stale text', async () => {
   vi.mocked(listDocuments).mockResolvedValue({ folders: [], files: [] });
   vi.mocked(search).mockResolvedValue({
-    results: [{ key: '产品文档/架构设计.md', title: '架构设计.md', path: '产品文档', snippet: '...<em>检索</em>...' }],
+    results: [{ key: '产品文档/架构设计.md', title: '架构设计.md', path: '产品文档', snippet: '...<em>检索</em>...', lineNumber: 5 }],
   });
   vi.mocked(getDocument).mockResolvedValue({
     key: '产品文档/架构设计.md',
diff --git a/frontend/tests/components/SearchResults.test.tsx b/frontend/tests/components/SearchResults.test.tsx
index b440e56..0662853 100644
--- a/frontend/tests/components/SearchResults.test.tsx
+++ b/frontend/tests/components/SearchResults.test.tsx
@@ -12,6 +12,7 @@ test('renders result count, titles, and highlighted snippets', () => {
           title: '架构设计.md',
           path: '产品文档',
           snippet: '检索：Meilisearch，支持 <em>中文全文检索</em>。',
+          lineNumber: null,
         },
       ]}
       onJumpToResult={vi.fn()}
@@ -28,7 +29,7 @@ test('clicking a result calls onJumpToResult with its key', () => {
   render(
     <SearchResults
       query="检索"
-      results={[{ key: '产品文档/架构设计.md', title: '架构设计.md', path: '产品文档', snippet: '...' }]}
+      results={[{ key: '产品文档/架构设计.md', title: '架构设计.md', path: '产品文档', snippet: '...', lineNumber: null }]}
       onJumpToResult={onJumpToResult}
     />
   );