diff --git a/zh-cn/device-dev/porting/standard-system-porting-guide.md b/zh-cn/device-dev/porting/standard-system-porting-guide.md
index b8e3c476bdead953b4b37486ad91a035c8a79c2b..35afad475325a2b59be7f98621e8c2f28707d5a8 100644
--- a/zh-cn/device-dev/porting/standard-system-porting-guide.md
+++ b/zh-cn/device-dev/porting/standard-system-porting-guide.md
@@ -30,10 +30,10 @@
       {
         "subsystem": "ace",
         "components": [
-          { "component": "ace_engine_lite", "features":[""] }
+          { "component": "ace_engine_lite", "features":[] }
         ]
-      }，
-	    …
+      },
+	...
     ]
 }