diff --git a/backend/database.js b/backend/database.js
index 590f354..df52677 100644
--- a/backend/database.js
+++ b/backend/database.js
@@ -320,8 +320,20 @@ const ShareDB = {
     `);
 
     const hashedPassword = password ? bcrypt.hashSync(password, 10) : null;
-    const sharePath = share_type === 'file' ? file_path : '/';
-    
+
+    // 修复：正确处理不同类型的分享路径
+    let sharePath;
+    if (share_type === 'file') {
+      // 单文件分享：使用完整文件路径
+      sharePath = file_path;
+    } else if (share_type === 'directory') {
+      // 文件夹分享：使用文件夹路径
+      sharePath = file_path;
+    } else {
+      // all类型：分享根目录
+      sharePath = '/';
+    }
+
     const result = stmt.run(
       userId, 
       shareCode, 
diff --git a/frontend/app.js b/frontend/app.js
index 1b5bf0d..f3295f8 100644
--- a/frontend/app.js
+++ b/frontend/app.js
@@ -65,6 +65,7 @@ createApp({
       shareFileForm: {
         fileName: "",
         filePath: "",
+        isDirectory: false,  // 新增：标记是否为文件夹
         password: "",
         expiryType: "never",
         customDays: 7
@@ -1175,6 +1176,7 @@ handleDragLeave(e) {
       this.shareFileForm.filePath = this.currentPath === '/'
         ? file.name
         : `${this.currentPath}/${file.name}`;
+      this.shareFileForm.isDirectory = file.isDirectory;  // 设置是否为文件夹
       this.shareFileForm.password = '';
       this.shareFileForm.expiryType = 'never';
       this.shareFileForm.customDays = 7;
@@ -1215,10 +1217,13 @@ handleDragLeave(e) {
                           this.shareFileForm.expiryType === 'custom' ? this.shareFileForm.customDays :
                           parseInt(this.shareFileForm.expiryType);
 
+        // 根据是否为文件夹决定share_type
+        const shareType = this.shareFileForm.isDirectory ? 'directory' : 'file';
+
         const response = await axios.post(
           `${this.apiBase}/api/share/create`,
           {
-            share_type: 'file',
+            share_type: shareType,  // 修复：文件夹使用directory类型
             file_path: this.shareFileForm.filePath,
             file_name: this.shareFileForm.fileName,
             password: this.shareFileForm.password || null,
@@ -1229,7 +1234,8 @@ handleDragLeave(e) {
 
         if (response.data.success) {
           this.shareResult = response.data;
-          this.showToast('success', '成功', '文件分享链接已创建');
+          const itemType = this.shareFileForm.isDirectory ? '文件夹' : '文件';
+          this.showToast('success', '成功', `${itemType}分享链接已创建`);
           this.loadShares();
         }
       } catch (error) {