diff --git a/cocos/ui/UIText.h b/cocos/ui/UIText.h
index 53f66e9572..2121f28ae8 100644
--- a/cocos/ui/UIText.h
+++ b/cocos/ui/UIText.h
@@ -100,6 +100,8 @@ public:
 
     /**
      * Sets the font name of label.
+     *  If you are trying to use a system font, you could just pass a font name, for example: Arial
+     * If you are trying to use a TTF, you should pass a file path to the TTF file, for example: resource/XXX.ttf
      *
      * @param  font name.
      */