diff --git a/lib/instance/instance_embed_lib.py b/lib/instance/instance_embed_lib.py
index 5d57bfe..58d7042 100644
--- a/lib/instance/instance_embed_lib.py
+++ b/lib/instance/instance_embed_lib.py
@@ -74,8 +74,6 @@ def embed_shell_enabled() -> bool:
 
 def redirect_to_embed_shell_if_enabled(page: str):
     """直连 /trade 等整页路由时，重定向到 embed 壳（顶栏常驻、tab 软切换）。"""
-    from flask import redirect, request, urlencode
-
     if not embed_shell_enabled():
         return None
     if (request.args.get("embed") or "").strip() == "1":