diff --git a/tests/ci/api_common_install.sh b/tests/ci/api_common_install.sh
index 02c4851c5..ebe12bf0e 100755
--- a/tests/ci/api_common_install.sh
+++ b/tests/ci/api_common_install.sh
@@ -25,7 +25,10 @@ sudo wget https://bootstrap.pypa.io/get-pip.py && sudo python ./get-pip.py && su
 sudo make swagger_client
 #TODO: Swagger python package used to installed into dist-packages, but it's changed into site-packages all in a sudden, we havn't found the root cause.
 #      so current workround is to copy swagger packages from site-packages to dist-packages.
-sudo cp -r /usr/lib/python3.7/site-packages/* /usr/local/lib/python3.7/dist-packages
+package_dir=/usr/lib/python3.7/site-packages
+if [ $(find $package_dir -type f| wc -l) -gt 0 ];then
+    sudo cp -r ${package_dir}/* /usr/local/lib/python3.7/dist-packages
+fi
 
 if [ $GITHUB_TOKEN ];
 then