diff --git a/nicsensor.sh b/nicsensor.sh
index 5c758aa..4818d73 100755
--- a/nicsensor.sh
+++ b/nicsensor.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-SCRIPT_VERSION="1.8.4"
+SCRIPT_VERSION="1.8.5"
 # ---------------------------------------------------------
 # Project Feature Varible (Change if need)
 # ---------------------------------------------------------
@@ -151,7 +151,7 @@ search_plugin_help(){
 
 print_usage(){
     echo ""
-    echo "================>>> nicsensor script usage <<<=================="
+    echo "=====================>>> nicsensor script usage <<<======================"
     echo "  Function 1 - Read Sensor Value"
     echo "    1) Command Format  : ./nicsensor.sh [slot] [sensor tpye] [slave]"
     echo "    2) Option Detail"
@@ -437,6 +437,14 @@ pre_exec_hook(){
         fi
     fi
 
+    if [ "$Param2" = "pmbus" ];then
+        if [ $param_num -le 3 ];then
+            fmt_print "console" $ERROR "Command Format illegal"
+            echo "Command Format  : ./nicsensor.sh [slot] pmbus [slave] [pmbus_command]"
+            exit 1
+        fi
+    fi
+
     # if the action is fru write, need pre-process fru data
     if [ "$Param2" = "fru" ];then
         if [ "$option_data" = "write" ];then
@@ -1236,12 +1244,16 @@ process_fru(){
     fi
 }
 
+# ---------------------------------------------------------
+#  PMBUS Function
+# ---------------------------------------------------------
 #@Param1 : Pmbus Command, hex data
 #@Param2 : Pmbus reading size, BYTE(1)|WORD(2)|BLOCK(3)|RAW(4)
 transfer_pmbus_command(){
     pmbus_res=`i2ctransfer -y $i2c_bus w1@$chip_slave $1 r$2`
     reset_pca9548 $i2c_bus $pca9548_slave
-    fmt_print "console" $INFO "$option_data Result: $pmbus_res"
+    fmt_print "console" $INFO "$option_data ,Command Code:$pmbus_res"
+    fmt_print "console" $INFO "Result: $pmbus_res"
 }
 
 # Do pmbus test if plugin avalible