diff --git a/app/modules/filemanager/storages/u115.py b/app/modules/filemanager/storages/u115.py
index 7d0772a4..746abef8 100644
--- a/app/modules/filemanager/storages/u115.py
+++ b/app/modules/filemanager/storages/u115.py
@@ -1,6 +1,7 @@
 import base64
 import hashlib
 import secrets
+import threading
 import time
 from pathlib import Path
 from typing import List, Dict, Optional, Tuple, Union
@@ -16,6 +17,8 @@ from app.schemas.types import StorageSchema
 from app.utils.singleton import Singleton
 from app.utils.string import StringUtils
 
+lock = threading.Lock()
+
 
 class U115Pan(StorageBase, metaclass=Singleton):
     """
@@ -54,27 +57,37 @@ class U115Pan(StorageBase, metaclass=Singleton):
             "Accept-Encoding": "gzip, deflate",
             "Content-Type": "application/x-www-form-urlencoded"
         })
-        self.init_storage()
+
+    def _check_session(self):
+        """
+        检查会话是否过期
+        """
+        if not self.access_token:
+            raise Exception("【115】请先扫码登录！")
 
     @property
     def access_token(self) -> Optional[str]:
         """
         访问token
         """
-        tokens = self.get_conf()
-        refresh_token = tokens.get("refresh_token")
-        if not refresh_token:
-            return None
-        expires_in = tokens.get("expires_in", 0)
-        refresh_time = tokens.get("refresh_time", 0)
-        if expires_in and refresh_time + expires_in < int(time.time()):
-            tokens = self.__refresh_access_token(refresh_token)
-            if tokens:
-                self.set_config({
-                    "refresh_time": int(time.time()),
-                    **tokens
-                })
-        return tokens.get("access_token")
+        with lock:
+            tokens = self.get_conf()
+            refresh_token = tokens.get("refresh_token")
+            if not refresh_token:
+                return None
+            expires_in = tokens.get("expires_in", 0)
+            refresh_time = tokens.get("refresh_time", 0)
+            if expires_in and refresh_time + expires_in < int(time.time()):
+                tokens = self.__refresh_access_token(refresh_token)
+                if tokens:
+                    self.set_config({
+                        "refresh_time": int(time.time()),
+                        **tokens
+                    })
+            access_token = tokens.get("access_token")
+            if access_token:
+                self.session.headers.update({"Authorization": f"Bearer {access_token}"})
+            return access_token
 
     def generate_qrcode(self) -> Tuple[dict, str]:
         """
@@ -112,6 +125,36 @@ class U115Pan(StorageBase, metaclass=Singleton):
             "codeContent": result['data']['qrcode']
         }, ""
 
+    def check_login(self) -> Optional[Tuple[dict, str]]:
+        """
+        改进的带PKCE校验的登录状态检查
+        """
+        if not self._auth_state:
+            return {}, "生成二维码失败"
+        try:
+            resp = self.session.get(
+                "https://qrcodeapi.115.com/get/status/",
+                params={
+                    "uid": self._auth_state["uid"],
+                    "time": self._auth_state["time"],
+                    "sign": self._auth_state["sign"]
+                }
+            )
+            if resp is None:
+                return {}, "网络错误"
+            result = resp.json()
+            if result.get("code") != 0 or not result.get("data"):
+                return {}, result.get("message")
+            if result["data"]["status"] == 2:
+                tokens = self.__get_access_token()
+                self.set_config({
+                    "refresh_time": int(time.time()),
+                    **tokens
+                })
+            return {"status": result["data"]["status"], "tip": result["data"]["msg"]}, ""
+        except Exception as e:
+            return {}, str(e)
+
     def __get_access_token(self) -> dict:
         """
         确认登录后，获取相关token
@@ -155,6 +198,9 @@ class U115Pan(StorageBase, metaclass=Singleton):
         """
         带错误处理和速率限制的API请求
         """
+        # 检查会话
+        self._check_session()
+
         resp = self.session.request(
             method, f"{self.base_url}{endpoint}",
             **kwargs
@@ -174,26 +220,6 @@ class U115Pan(StorageBase, metaclass=Singleton):
 
         # 返回数据
         ret_data = resp.json()
-
-        # 处理refresh_token失效
-        if ret_data.get("code") in [40140116, 40140119]:
-            self.set_config({})
-            logger.warn("【115】refresh_token 失效，请重新扫描登录！")
-            return None
-
-        # 处理access_token失效
-        if ret_data.get("code") == 40140125:
-            refresh_token = self.get_conf().get("refresh_token")
-            if refresh_token:
-                tokens = self.__refresh_access_token(refresh_token)
-                if tokens:
-                    self.set_config({
-                        "refresh_time": int(time.time()),
-                        **tokens
-                    })
-                    return self._request_api(method, endpoint, result_key, **kwargs)
-            return None
-
         if ret_data.get("code") != 0:
             logger.warn(f"【115】{method} 请求 {endpoint} 出错：{ret_data.get('message')}！")
 
@@ -284,43 +310,8 @@ class U115Pan(StorageBase, metaclass=Singleton):
                     sha1.update(chunk)
         return sha1.hexdigest()
 
-    def check_login(self) -> Optional[Tuple[dict, str]]:
-        """
-        改进的带PKCE校验的登录状态检查
-        """
-        if not self._auth_state:
-            return {}, "生成二维码失败"
-        try:
-            resp = self.session.get(
-                "https://qrcodeapi.115.com/get/status/",
-                params={
-                    "uid": self._auth_state["uid"],
-                    "time": self._auth_state["time"],
-                    "sign": self._auth_state["sign"]
-                }
-            )
-            if resp is None:
-                return {}, "网络错误"
-            result = resp.json()
-            if result.get("code") != 0 or not result.get("data"):
-                return {}, result.get("message")
-            if result["data"]["status"] == 2:
-                tokens = self.__get_access_token()
-                self.set_config({
-                    "refresh_time": int(time.time()),
-                    **tokens
-                })
-            return {"status": result["data"]["status"], "tip": result["data"]["msg"]}, ""
-        except Exception as e:
-            return {}, str(e)
-
     def init_storage(self):
-        """
-        初始化存储连接
-        """
-        self.session.headers.update({
-            "Authorization": f"Bearer {self.access_token}"
-        })
+        pass
 
     def list(self, fileitem: schemas.FileItem) -> List[schemas.FileItem]:
         """
@@ -498,7 +489,7 @@ class U115Pan(StorageBase, metaclass=Singleton):
             access_key_secret=token_resp['AccessKeySecret'],
             security_token=token_resp['SecurityToken']
         )
-        bucket = oss2.Bucket(auth, endpoint, init_result['bucket']) # noqa
+        bucket = oss2.Bucket(auth, endpoint, init_result['bucket'])  # noqa
 
         # 分片上传
         headers = {