diff --git a/dist/images/upgrade-ovs.sh b/dist/images/upgrade-ovs.sh
index a3e629038e8..0479e8bd4cd 100755
--- a/dist/images/upgrade-ovs.sh
+++ b/dist/images/upgrade-ovs.sh
@@ -1,8 +1,15 @@
 #!/bin/bash
 
+dsChartVer=`kubectl get ds -n kube-system ovs-ovn -o jsonpath={.metadata.annotations.chart-version}`
 podNames=`kubectl get pod -n kube-system | grep ovs-ovn | awk '{print $1}'`
 for pod in $podNames
 do
+  podChartVer=`kubectl get pod -n kube-system $pod -o jsonpath={.metadata.annotations.chart-version}`
+  if [ $dsChartVer == $podChartVer ]
+  then
+    echo "pod $pod alreay upgraded"
+    continue
+  fi
   echo "upgrade pod $pod"
   kubectl delete pod -n kube-system $pod
 
@@ -18,6 +25,6 @@ do
     readyNum=$(kubectl get daemonset -n kube-system | grep ovs-ovn | awk {'print $4'})
     availableNum=$(kubectl get daemonset -n kube-system | grep ovs-ovn | awk {'print $6'})
     echo "ovs-ovn upgrade, desire $desireNum, current $currentNum, ready $readyNum, available $availableNum"
-    sleep 1
+    sleep 0.5
   done
 done