diff --git a/paddle/scripts/paddle_build.sh b/paddle/scripts/paddle_build.sh
index 271cdd23100d0669d045b9190da127045189475a..b39a8945eb7135af1a5ee2ab0a3d1d7166db3358 100755
--- a/paddle/scripts/paddle_build.sh
+++ b/paddle/scripts/paddle_build.sh
@@ -1154,10 +1154,6 @@ function check_diff_file_for_coverage() {
 
 function check_change_of_unittest() {
     generate_unittest_spec "PR"
-    fetch_upstream_develop_if_not_exist
-    git reset --hard upstream/$BRANCH
-    cmake_gen $1
-    generate_unittest_spec "DEV"
     check_approvals_of_unittest 2
 }
 
diff --git a/tools/check_added_ut.sh b/tools/check_added_ut.sh
index d59230b1c1fe0a0bd41fcfb2fcb33809c4bcabac..76f5e294d13c1f41c89eed33387f8bbc626640b1 100644
--- a/tools/check_added_ut.sh
+++ b/tools/check_added_ut.sh
@@ -53,6 +53,9 @@ elif [[ "$SYSTEM" == "Windows_NT" ]];then
 fi
 # remove line ended with .exe to get correct deleted_ut list
 ctest -N | awk -F ':' '{print $2}' | sed '/^$/d' | sed '$d' | sed 's/ //g' | sed '/\.exe$/d' | grep 'test' > $PADDLE_ROOT/br-ut
+#UNITTEST_DEV.spec is used for checking changes of unnitests between pr and paddle_develop in the later step
+spec_path=${PADDLE_ROOT}/paddle/fluid/UNITTEST_DEV.spec
+ctest -N | awk -F ':' '{print $2}' | sed '/^$/d' | sed '$d' > ${spec_path}
 cd $PADDLE_ROOT/build
 ctest -N | awk -F ':' '{print $2}' | sed '/^$/d' | sed '$d' | sed 's/ //g' | sed '/\.exe$/d' | grep 'test' > $PADDLE_ROOT/pr-ut
 cd $PADDLE_ROOT