diff --git a/src/data-loader/toc.ts b/src/data-loader/toc.ts
index b682d68..4227dc4 100644
--- a/src/data-loader/toc.ts
+++ b/src/data-loader/toc.ts
@@ -62,17 +62,22 @@ export function buildFileTree(paths: string[]): FileNode[] {
   for (const path of paths) {
     const parts = path.split("/").filter(Boolean);
     let currentPath = "";
+    let displayPath = "";
 
     for (let i = 0; i < parts.length; i++) {
       const part = parts[i];
       const isFile = i === parts.length - 1 && part.includes(".");
       currentPath += "/" + part;
 
+      // 显示路径：文件去掉 .md 扩展名
+      const displayPart = isFile ? part.replace(/\.md$/, "") : part;
+      displayPath += "/" + displayPart;
+
       if (map.has(currentPath)) continue;
 
       const node: FileNode = {
-        name: part.replace(/\.md$/, ""),
-        path: currentPath,
+        name: displayPart,
+        path: displayPath,
       };
 
       if (!isFile) {