diff --git a/server.py b/server.py
index e4a3020..0d594d1 100644
--- a/server.py
+++ b/server.py
@@ -11,7 +11,7 @@ monkey.patch_all()
 
 app = Flask(__name__)
 
-A1 = ""
+global_a1 = ""
 # 确保在模块级别声明全局变量
 browser_context = None
 context_page = None
@@ -39,13 +39,14 @@ time.sleep(1)
 cookies = browser_context.cookies()
 for cookie in cookies:
     if cookie["name"] == "a1":
-        A1 = cookie["value"]
+        global_a1 = cookie["value"]
         print("当前浏览器 cookie 中 a1 值为：" + cookie["value"] + "，请将需要使用的 a1 设置成一样方可签名成功")
 print("跳转小红书首页成功，等待调用")
 
 
 def sign(uri, data, a1, web_session):
     global browser_context, context_page  # 声明全局变量
+    global global_a1
     try:
         # 确保页面仍然有效，如果页面已关闭则重新初始化
         if context_page is None or context_page.is_closed():
@@ -54,8 +55,15 @@ def sign(uri, data, a1, web_session):
             time.sleep(5)
             context_page.reload()
             time.sleep(1)
-
-        # 执行 JavaScript 函数
+            
+        if a1 != global_a1:
+          browser_context.add_cookies([
+              {'name': 'a1', 'value': a1, 'domain': ".xiaohongshu.com", 'path': "/"}
+          ])
+          context_page.reload()
+          time.sleep(1)
+          global_a1 = a1
+          # 执行 JavaScript 函数
         encrypt_params = context_page.evaluate("([url, data]) => window._webmsxyw(url, data)", [uri, data])
         return {
             "x-s": encrypt_params["X-s"],