diff --git a/tests/script/unique/arbitrator/dn3_mn1_vnode_change.sim b/tests/script/unique/arbitrator/dn3_mn1_vnode_change.sim
index b94c297ff7db960a04db75966fd319b5780c9e1c..c156d7d55cc84cb924d4e7939166f345a4a3e289 100644
--- a/tests/script/unique/arbitrator/dn3_mn1_vnode_change.sim
+++ b/tests/script/unique/arbitrator/dn3_mn1_vnode_change.sim
@@ -93,14 +93,14 @@ if $data00 != $totalRows then
 	return -1
 endi
 
-print ============== step3: stop dnode2, and remove its vnodeX subdirector 
-system sh/exec.sh -n dnode2 -s stop -x SIGINT
+print ============== step3: stop dnode4, and remove its vnodeX subdirector 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
 sleep $sleepTimer
-wait_dnode2_offline_0:
+wait_dnode4_offline_0:
 sql show dnodes
 if $rows != 4 then
   sleep 2000
-  goto wait_dnode2_offline_0
+  goto wait_dnode4_offline_0
 endi
 print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
 print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
@@ -110,26 +110,49 @@ print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
 #print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
 #$dnode1Status = $data4_1  
 $dnode2Status = $data4_2
-#$dnode3Status = $data4_3  
-#$dnode4Status = $data4_4 
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
 #$dnode5Status = $data4_5
 
-if $dnode2Status != offline then
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
   sleep 2000
-  goto wait_dnode2_offline_0
+  goto wait_dnode4_vgroup_offline
 endi
 
-system rm -rf ../../../sim/dnode2/data/vnode/*
+
+system rm -rf ../../../sim/dnode4/data/vnode/*
 sleep 1000
 
-print ============== step4: restart dnode2, waiting sync end 
-system sh/exec.sh -n dnode2 -s start
+print ============== step4: restart dnode4, waiting sync end 
+system sh/exec.sh -n dnode4 -s start
 sleep $sleepTimer
-wait_dnode2_reready:
+wait_dnode4_reready:
 sql show dnodes
 if $rows != 4 then
   sleep 2000
-  goto wait_dnode2_reready
+  goto wait_dnode4_reready
 endi
 print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
 print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
@@ -139,25 +162,49 @@ print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
 #print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
 #$dnode1Status = $data4_1  
 $dnode2Status = $data4_2
-#$dnode3Status = $data4_3  
-#$dnode4Status = $data4_4 
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
 #$dnode5Status = $data4_5
 
-if $dnode2Status != ready then
+if $dnode4Status != ready then
   sleep 2000
-  goto wait_dnode2_reready
+  goto wait_dnode4_reready
 endi
 
-print ============== step5: stop dnode3/dnode4, and check rows
+wait_dnode4_vgroup_slave:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_slave
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+print dnode4Vtatus: $dnode4Vtatus
+print dnode3Vtatus: $dnode3Vtatus 
+if $dnode4Vtatus != slave then
+  sleep 2000
+  goto wait_dnode4_vgroup_slave
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_slave
+endi
+
+print ============== step5: stop dnode3/dnode2, and check rows
+system sh/exec.sh -n dnode2 -s stop
 system sh/exec.sh -n dnode3 -s stop
-system sh/exec.sh -n dnode4 -s stop
 sleep $sleepTimer
 
-wait_dnode34_offline:
+wait_dnode23_offline:
 sql show dnodes
 if $rows != 4 then
   sleep 2000
-  goto wait_dnode34_offline
+  goto wait_dnode23_offline
 endi
 print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
 print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
@@ -171,17 +218,41 @@ $dnode3Status = $data4_3
 $dnode4Status = $data4_4 
 #$dnode5Status = $data4_5
 
-if $dnode2Status != ready then
+if $dnode2Status != offline then
   sleep 2000
-  goto wait_dnode34_offline
+  goto wait_dnode23_offline
 endi
 if $dnode3Status != offline then
   sleep 2000
-  goto wait_dnode34_offline
+  goto wait_dnode23_offline
 endi
-if $dnode4Status != offline then
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode23_offline
+endi
+
+wait_dnode4_vgroup_master:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_master
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+print dnode4Vtatus: $dnode4Vtatus
+print dnode3Vtatus: $dnode3Vtatus 
+if $dnode4Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_master
+endi
+if $dnode3Vtatus != offline then
   sleep 2000
-  goto wait_dnode34_offline
+  goto wait_dnode4_vgroup_master
 endi
 
 # check using select