diff --git a/docs/gateway.md b/docs/gateway.md
index 9c8d552d..0587a8d3 100644
--- a/docs/gateway.md
+++ b/docs/gateway.md
@@ -265,7 +265,7 @@ main_engine.add_gateway(TigerGateway)
  
 
 
-# BITMEX
+### BITMEX
 
 #### 如何加载