diff --git a/PORTING/CNN/cnn.c b/PORTING/CNN/cnn.c
index 568b294..fdcd1ad 100644
--- a/PORTING/CNN/cnn.c
+++ b/PORTING/CNN/cnn.c
@@ -620,12 +620,12 @@ void cnn_run()
 		myfree(SRAMEX, yi);
 		myfree(SRAMEX, CNN_data);
 		myfree(SRAMEX, Full_output1);
-		myfree(SRAMEX, Matrix_data);
     }
     else printf("No\r\n");/*如果没放电打印“No”*/
     printf("maxvalue is:%f\t",maxvalue);
     printf("meanvalue is:%f\t",meanvalue);
     printf("std_devvalue is:%f\r\n",std_devvalue);
+	myfree(SRAMEX, Matrix_data);
 	isrun = 0;
 }