diff --git a/backend/api-gateway/kong.yml b/backend/api-gateway/kong.yml
index 4b3246b7..ddc36404 100644
--- a/backend/api-gateway/kong.yml
+++ b/backend/api-gateway/kong.yml
@@ -326,6 +326,7 @@ services:
   # ---------------------------------------------------------------------------
   # Trading Service WebSocket - 价格实时推送
   # WebSocket 连接: wss://api.xxx.com/ws/price -> ws://192.168.1.111:3022/price
+  # Kong 会自动处理 HTTP -> WebSocket 升级，所以 protocols 只需要 http/https
   # ---------------------------------------------------------------------------
   - name: trading-ws-service
     url: http://192.168.1.111:3022
@@ -337,8 +338,6 @@ services:
         protocols:
           - http
           - https
-          - ws
-          - wss
 
   # ---------------------------------------------------------------------------
   # Mining Admin Service 2.0 - 挖矿管理后台服务