diff --git a/README.md b/README.md
index 4fb0bd3..60a6b78 100644
--- a/README.md
+++ b/README.md
@@ -46,9 +46,7 @@ If the build successed, you can find the main execute file in the lpmsdemo folde
 
 For classification needs a trained model file. Please change trained filename(base on tensorflow)  to tmodel.pb  and copy it to the lpmsdemo folder, now you can start the lpms server.
 
-./main or ./main -classid=1 -interval=1.5 -dnnfilter=PDnnDetector,PDnnOtherFilter -metamode=1 -gpucount=2 -parallel=2 -embededdnn=1
-
-    classid : class id for classification
+./main or ./main -interval=1.5 -dnnfilter=PDnnDetector,PDnnOtherFilter -metamode=2 -gpucount=2 -parallel=2 -embededdnn=1
   
     interval: time intervals(unit second) for classification