diff --git a/README.md b/README.md
index 2d6131c9e..660efa176 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ APP_COMPANY_ID=1
 # System Business Model (b2c/bbc)
 APP_PLATFORM=b2c
   
-# Payment Callback Domain，used for payment result notifications.
+# Mobile Web App Payment Callback Domain，used for payment result notifications.
 APP_CUSTOM_SERVER=
 
 # Default home page path