diff --git a/script/msg_transfer_start.sh b/script/msg_transfer_start.sh
index b54513999..8a66ec35e 100755
--- a/script/msg_transfer_start.sh
+++ b/script/msg_transfer_start.sh
@@ -22,7 +22,12 @@ sleep 1
 
 cd ${msg_transfer_binary_root}
 for ((i = 0; i < ${msg_transfer_service_num}; i++)); do
-      nohup ./${msg_transfer_name}  -prometheus_port ${prome_ports[$i]} >>../logs/openIM.log 2>&1 &
+      prome_port=${prome_ports[$i]}
+      cmd="nohup ./${msg_transfer_name}"
+      if [ $prome_port != "" ]; then
+        cmd=$cmd+" -prometheus_port $prome_port"
+      fi
+      $cmd >>../logs/openIM.log 2>&1 &
 done
 
 #Check launched service process
diff --git a/script/start_rpc_service.sh b/script/start_rpc_service.sh
index bb53a85b6..8abfde5ed 100644
--- a/script/start_rpc_service.sh
+++ b/script/start_rpc_service.sh
@@ -80,10 +80,8 @@ for ((i = 0; i < ${#service_filename[*]}; i++)); do
   list_to_string $portList2
   prome_ports=($ports_array)
   #Start related rpc services based on the number of ports
-  # for j in ${service_ports}; do
   for ((j = 0; j < ${#service_ports[*]}; j++)); do
     #Start the service in the background
-    #    ./${service_filename[$i]} -port $j &
     cmd="./${service_filename[$i]} -port ${service_ports[$j]} -prometheus_port ${prome_ports[$j]}"
     if [ $i -eq 0 -o $i -eq 1 ]; then
       cmd="./${service_filename[$i]} -port ${service_ports[$j]}"