diff --git a/install.sh b/install.sh
index 226b2fa..ef0e816 100644
--- a/install.sh
+++ b/install.sh
@@ -57,6 +57,7 @@ main(){
     echo "8. 修改Reality目标域名"
 
     # 读取用户选择
+    local choice
     read -p "输入您的选择: " choice
 
     # 根据用户选择执行相应的操作