diff --git a/scripts/checkapproval.sh b/scripts/checkapproval.sh
index 446bc0382695b150576f0ffe89abcc3faf0eae36..c7793ebd2f3a22af79dc1ebda66ec13de995670b 100644
--- a/scripts/checkapproval.sh
+++ b/scripts/checkapproval.sh
@@ -2,7 +2,7 @@
 
 API_FILES=("doc/fluid")
 for API_FILE in ${API_FILES[*]}; do
-  API_CHANGE=`git diff --name-only upstream/$BRANCH | grep "${API_FILE}" || true`
+  API_CHANGE=`git diff --name-only upstream/$BRANCH | grep "${API_FILE}" | grep -v "doc/fluid/design/mkldnn" || true`
   if [ "${API_CHANGE}" ];then
     approval_line=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/FluidDoc/pulls/${GIT_PR_ID}/reviews?per_page=10000`
     if [ "${API_FILE}" == "doc/fluid" ];then