diff --git a/tests/run.sh b/tests/run.sh
index 194204eb6..c86719dbd 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -117,6 +117,7 @@ EOF
         --data-dir "$OUT_DIR/pd" &
 
     # wait until PD is online...
+	# use wget, on CI curl's version is too old: curl: (58) unable to load client key: -8178 (SEC_ERROR_BAD_KEY)))))
     while ! wget -q -O - \
     --ca-certificate="$OUT_DIR/cert/ca.pem" \
     --certificate="$OUT_DIR/cert/client.pem" \
@@ -125,21 +126,6 @@ EOF
         sleep 1
     done
 
-
-    # on CI curl's version is too old: curl: (58) unable to load client key: -8178 (SEC_ERROR_BAD_KEY)))
-    # num=0
-    # while ! curl --cacert "$OUT_DIR/cert/ca.pem" --cert "$OUT_DIR/cert/client.pem" --key "$OUT_DIR/cert/client.key" -o /dev/null -sf https://127.0.0.1:2379/pd/api/v1/version; do
-    #     num=$(( $num + 1  ))
-    #     if (( num > 60   )); then
-    #         echo "Fail to check PD is started"
-    #         # try again for why error
-    #         curl --cacert "$OUT_DIR/cert/ca.pem" --cert "$OUT_DIR/cert/client.pem" --key "$OUT_DIR/cert/client.key" https://127.0.0.1:2379/pd/api/v1/version
-    #         exit -1
-    #     fi
-
-    #     sleep 1
-    # done
-
     echo "Starting downstream PD..."
     pd-server \
         --client-urls http://127.0.0.1:2381 \
@@ -237,9 +223,6 @@ EOF
     https://127.0.0.1:8249/status; do
         sleep 1
     done
-    # while ! curl --cacert "$OUT_DIR/cert/ca.pem" --cert "$OUT_DIR/cert/client.pem" --key "$OUT_DIR/cert/client.key" -o /dev/null -sf https://127.0.0.1:8249/status; do
-    #     sleep 1
-    # done
 }