diff --git a/inc/framework/omg/parser/model_parser.h b/inc/framework/omg/parser/model_parser.h
index bb3a04b9..021985c3 100644
--- a/inc/framework/omg/parser/model_parser.h
+++ b/inc/framework/omg/parser/model_parser.h
@@ -67,7 +67,7 @@ class ModelParser {
   /**
    * @ingroup domi_omg
    * @brief Parse relevant data from memory and save it to graph
-   * @param [in] input Model file memory data
+   * @param [in] input Model file memory data and size
    * @param [in|out] graph A graph for saving the model information after analysis
    * @return SUCCESS
    * @return FAILED