diff --git a/app.py b/app.py
index d373d55..11eb88f 100644
--- a/app.py
+++ b/app.py
@@ -111,13 +111,15 @@ async def sign(uri: str, data: Dict[str, Any], a1: str, web_session: str) -> Dic
             
         if a1 != global_a1:
             await setCookie(a1)  # Ensure setCookie is awaited properly
+
         # 执行 JavaScript 函数
-        # localStorage.getItem("b1")
         b1 = await context_page.evaluate("() => localStorage.getItem('b1')")
         b1b1 = await context_page.evaluate("() => localStorage.getItem('b1b1')")
         encrypt_params = await context_page.evaluate("([url, data]) => window._webmsxyw(url, data)", [uri, data])
+        
         if not encrypt_params or not isinstance(encrypt_params, dict):
             raise HTTPException(status_code=500, detail="Failed to retrieve encryption parameters")
+        
         return {
             "x-s": encrypt_params["X-s"],
             "x-t": str(encrypt_params["X-t"]),
@@ -125,8 +127,23 @@ async def sign(uri: str, data: Dict[str, Any], a1: str, web_session: str) -> Dic
             "b1b1": b1b1,
         }
     except Exception as e:
-        print(f"Error during sign operation: {e}")
-        raise HTTPException(status_code=500, detail=str(e))
+        # 检测页面崩溃错误并重新初始化
+        if "Target crashed" in str(e):
+            print("页面崩溃，正在重新初始化浏览器上下文和页面...")
+            try:
+                browser_context, context_page = await get_context_page(playwright_instance, "stealth.min.js")
+                await context_page.goto("https://www.xiaohongshu.com")
+                await asyncio.sleep(5)
+                await context_page.reload()
+                await asyncio.sleep(1)
+                # 重试签名操作
+                return await sign(uri, data, a1, web_session)
+            except Exception as reinit_error:
+                print(f"重新初始化失败: {reinit_error}")
+                raise HTTPException(status_code=500, detail="Failed to recover from page crash")
+        else:
+            print(f"Error during sign operation: {e}")
+            raise HTTPException(status_code=500, detail=str(e))
 
 
 @app.post("/sign")