diff --git a/app_vx.py b/app_vx.py
index 5eea3975..5c5f6913 100644
--- a/app_vx.py
+++ b/app_vx.py
@@ -706,6 +706,7 @@ app.config['PERMANENT_SESSION_LIFETIME'] = timedelta(days=7)  # Session 有效
 app.config['SESSION_COOKIE_SECURE'] = False  # 生产环境 HTTPS 时设为 True
 app.config['SESSION_COOKIE_HTTPONLY'] = True
 app.config['SESSION_COOKIE_SAMESITE'] = 'Lax'
+app.config['SESSION_COOKIE_NAME'] = 'vf_mini_session'  # 与 app.py 区分，避免同域名下 cookie 冲突
 
 # Cache directory setup
 CACHE_DIR = Path('cache')
@@ -4155,8 +4156,8 @@ def api_login_wechat():
 # ============================================
 # 微信获取手机号接口
 # ============================================
-# 微信 access_token 缓存 Key
-_WECHAT_ACCESS_TOKEN_KEY = 'vf_wechat_access_token'
+# 微信 access_token 缓存 Key（与 app.py 共享，避免重复刷新触发微信频率限制）
+_WECHAT_ACCESS_TOKEN_KEY = 'wechat:access_token:miniprogram'
 
 
 def get_wechat_access_token(force_refresh=False):