diff --git a/packages/backend/src/auth/auth.controller.ts b/packages/backend/src/auth/auth.controller.ts
index fa7df90..fb30453 100644
--- a/packages/backend/src/auth/auth.controller.ts
+++ b/packages/backend/src/auth/auth.controller.ts
@@ -286,7 +286,54 @@ export const deleteUserPasskeyHandler = async (req: Request, res: Response): Pro
     }
 };
 
+/**
+ * 更新当前认证用户指定的 Passkey 名称 (PUT /api/v1/user/passkeys/:credentialID/name)
+ */
+export const updateUserPasskeyNameHandler = async (req: Request, res: Response): Promise<void> => {
+    const userId = req.session.userId;
+    const username = req.session.username;
+    const { credentialID } = req.params;
+    const { name } = req.body;
 
+    if (!userId || !username) {
+        res.status(401).json({ message: '用户未认证。' });
+        return;
+    }
+
+    if (!credentialID) {
+        res.status(400).json({ message: '必须提供 Passkey 的 CredentialID。' });
+        return;
+    }
+
+    if (typeof name !== 'string' || name.trim() === '') {
+        res.status(400).json({ message: 'Passkey 名称不能为空。' });
+        return;
+    }
+
+    const trimmedName = name.trim();
+
+    try {
+        await passkeyService.updatePasskeyName(userId, credentialID, trimmedName);
+        console.log(`[AuthController] 用户 ${username} (ID: ${userId}) 成功更新了 Passkey (CredentialID: ${credentialID}) 的名称为 "${trimmedName}"。`);
+        auditLogService.logAction('PASSKEY_NAME_UPDATED', { userId, username, credentialId: credentialID, newName: trimmedName });
+        // Optionally send a notification if desired
+        // notificationService.sendNotification('PASSKEY_NAME_UPDATED', { userId, username, credentialId: credentialID, newName: trimmedName });
+        res.status(200).json({ message: 'Passkey 名称更新成功。' });
+
+    } catch (error: any) {
+        console.error(`[AuthController] 用户 ${username} (ID: ${userId}) 更新 Passkey (CredentialID: ${credentialID}) 名称时出错:`, error.message, error.stack);
+        if (error.message === 'Passkey not found.') {
+            res.status(404).json({ message: '指定的 Passkey 未找到。' });
+        } else if (error.message === 'Unauthorized to update this passkey name.') {
+            auditLogService.logAction('PASSKEY_NAME_UPDATE_UNAUTHORIZED', { userId, username, credentialIdAttempted: credentialID });
+            res.status(403).json({ message: '无权更新此 Passkey 名称。' });
+        } else {
+            res.status(500).json({ message: '更新 Passkey 名称失败。', error: error.message });
+        }
+    }
+};
+ 
+ 
 /**
  * 处理用户登录请求 (POST /api/v1/auth/login)
  */
diff --git a/packages/backend/src/auth/auth.routes.ts b/packages/backend/src/auth/auth.routes.ts
index 925fd23..6e61060 100644
--- a/packages/backend/src/auth/auth.routes.ts
+++ b/packages/backend/src/auth/auth.routes.ts
@@ -18,7 +18,8 @@ import {
   verifyPasskeyAuthenticationHandler,
   // 新的 Passkey 管理处理器
   listUserPasskeysHandler,
-  deleteUserPasskeyHandler
+  deleteUserPasskeyHandler,
+  updateUserPasskeyNameHandler // 新增：更新 Passkey 名称的处理器
 } from './auth.controller';
 import { isAuthenticated } from './auth.middleware';
 import { ipBlacklistCheckMiddleware } from './ipBlacklistCheck.middleware';
@@ -79,7 +80,10 @@ router.get('/user/passkeys', isAuthenticated, listUserPasskeysHandler);
 // DELETE /api/v1/auth/user/passkeys/:credentialID - 删除当前用户指定的 Passkey (需要认证)
 router.delete('/user/passkeys/:credentialID', isAuthenticated, deleteUserPasskeyHandler);
 
-
+// PUT /api/v1/auth/user/passkeys/:credentialID/name - 更新当前用户指定的 Passkey 名称 (需要认证)
+router.put('/user/passkeys/:credentialID/name', isAuthenticated, updateUserPasskeyNameHandler);
+ 
+ 
 // POST /api/v1/auth/logout - 用户登出接口 (公开访问)
 router.post('/logout', logout);
 
diff --git a/packages/backend/src/services/passkey.service.ts b/packages/backend/src/services/passkey.service.ts
index 1b3bf07..44bb917 100644
--- a/packages/backend/src/services/passkey.service.ts
+++ b/packages/backend/src/services/passkey.service.ts
@@ -289,6 +289,18 @@ export class PasskeyService {
     const wasDeleted = await this.passkeyRepo.deletePasskey(credentialID);
     return wasDeleted;
   }
-}
 
+  async updatePasskeyName(userId: number, credentialID: string, newName: string): Promise<void> {
+    const passkey = await this.passkeyRepo.getPasskeyByCredentialId(credentialID);
+    if (!passkey) {
+      throw new Error('Passkey not found.');
+    }
+    if (passkey.user_id !== userId) {
+      // Security measure: User can only update their own passkey names
+      throw new Error('Unauthorized to update this passkey name.');
+    }
+    await this.passkeyRepo.updatePasskeyName(credentialID, newName);
+  }
+}
+ 
 export const passkeyService = new PasskeyService(passkeyRepository, userRepository);
\ No newline at end of file
diff --git a/packages/backend/src/types/audit.types.ts b/packages/backend/src/types/audit.types.ts
index af4cada..116c821 100644
--- a/packages/backend/src/types/audit.types.ts
+++ b/packages/backend/src/types/audit.types.ts
@@ -13,7 +13,9 @@ export type AuditLogActionType =
   | 'PASSKEY_AUTH_FAILURE'
   | 'PASSKEY_DELETED'
   | 'PASSKEY_DELETE_UNAUTHORIZED'
-
+  | 'PASSKEY_NAME_UPDATED'
+  | 'PASSKEY_NAME_UPDATE_UNAUTHORIZED'
+ 
   // Connections
   | 'CONNECTION_CREATED'
   | 'CONNECTION_UPDATED'
diff --git a/packages/frontend/src/views/SettingsView.vue b/packages/frontend/src/views/SettingsView.vue
index 982cf89..6c1c82a 100644
--- a/packages/frontend/src/views/SettingsView.vue
+++ b/packages/frontend/src/views/SettingsView.vue
@@ -76,7 +76,7 @@
                               <span class="text-xs text-text-tertiary ml-1">(ID: ...{{ typeof key.credentialID === 'string' && key.credentialID ? key.credentialID.slice(-8) : 'N/A' }})</span>
                             </span>
                             <div v-else class="flex items-center flex-grow">
-                              <input type="text" v-model="editingPasskeyName" @keyup.enter="savePasskeyName(key.credentialID)" @keyup.esc="cancelEditPasskeyName" class="flex-grow px-2 py-1 border border-border rounded-md shadow-sm bg-background text-foreground focus:outline-none focus:ring-1 focus:ring-primary focus:border-primary text-sm" :placeholder="$t('settings.passkey.enterNamePlaceholder', '输入 Passkey 名称')" />
+                              <input type="text" v-model="editingPasskeyName" @keyup.enter="savePasskeyName(key.credentialID)" @keyup.esc="cancelEditPasskeyName" class="flex-grow max-w-sm px-2 py-1 border border-border rounded-md shadow-sm bg-background text-foreground focus:outline-none focus:ring-1 focus:ring-primary focus:border-primary text-sm" :placeholder="$t('settings.passkey.enterNamePlaceholder', '输入 Passkey 名称')" />
                               <button @click="savePasskeyName(key.credentialID)" :disabled="passkeyEditLoadingStates[key.credentialID]" class="ml-2 px-2 py-1 bg-success text-success-text rounded-md text-xs font-medium hover:bg-success/80 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-success disabled:opacity-50 disabled:cursor-not-allowed transition duration-150 ease-in-out">
                                 {{ passkeyEditLoadingStates[key.credentialID] ? $t('common.saving') : $t('common.save') }}
                               </button>