diff --git a/nicsensor.sh b/nicsensor.sh
index 9a69793..22b74f8 100755
--- a/nicsensor.sh
+++ b/nicsensor.sh
@@ -65,6 +65,7 @@ LM95241_Remote2_name="Remote2"
 # ---------------------------------------------------------
 Support_Sensor_List="emc1413, adc128, ina3221, ina226, tmp468, tmp112, lm95241"
 Support_Server_List="5280m7, 5468m7, 5688m7, donghu, yichun, qiandaohu"
+Support_Property_List="debug|n_detect|server|fru_size|fru_offset|i2cbus"
 # Which server will use this script
 server_type="auto"
 
@@ -249,7 +250,7 @@ print_usage(){
         echo "  Function 5 - Properties Settings"
         echo "   1) Command Format   : ./nicsensor.sh [get/set] [property] [value]"
         echo "   2) Option Detail"
-        echo "       - [property]    : debug|n_detect|server|fru_size|fru_offset|i2cbus"
+        echo "       - [property]    : $Support_Property_List"
         echo "       - [value]       : property's value"
         echo "   3) E.G.             : ./nicsensor.sh set server 5280m7"
         echo "                       : ./nicsensor.sh set debug 1"
@@ -390,6 +391,7 @@ get_set_properties(){
         default_data=$i2c_bus
     else
         fmt_print "console" $ERROR "Invalid Property : $Param2"
+        fmt_print "console" $INFO "Support Property List : $Support_Property_List"
         exit 1
     fi
 
@@ -547,43 +549,7 @@ switch_pca9548_channel(){
     fi
 }
 
-# Desc : Pre-execute hook function
-# Function 1 : Parameter Integrity Check
-# Function 2 : Partial Data Preprocessing
-# Function 3 : Runtime Environment Initialization
-# Function 4 : Implementation of Parameter Setting Function
-pre_exec_hook(){
-    init_debuglog
-    systemtool_check
-
-    if [ "$Param1" = "help" ] && [ $param_num -eq 2 ];then
-        print_usage $Param2
-        exit 0
-    elif [ "$Param1" = "help" ] && [ $param_num -gt 2 ];then
-        print_usage_guide
-        exit 0
-    fi
-
-    if [ "$Param1" = "get" ] || [ "$Param1" = "set" ];then
-        get_set_properties
-    fi
-
-    load_properties_from_cache
-    # check server_type if is auto
-    # if in debug mode, skip this check
-    if [ "$server_type" = "auto" ] && [ $DEBUG_MODE -eq 0 ];then
-        try_get_server_type
-    fi
-
-    # is param legel?
-    if [ "$Param2" = "chip" ];then
-        if [ $param_num -le 3 ];then
-            fmt_print "console" $ERROR "Command Format illegal"
-            echo "Command Format  : ./nicsensor.sh [slot] chip [slave] [i2c_command]"
-            exit 1
-        fi
-    fi
-
+extension_preprocess(){
     if [ "$Param2" = "pmbus" ];then
         if [ $param_num -le 3 ];then
             fmt_print "console" $ERROR "Command Format illegal"
@@ -620,6 +586,46 @@ pre_exec_hook(){
             exit 1
         fi
     fi
+}
+
+# Desc : Pre-execute hook function
+# Function 1 : Parameter Integrity Check
+# Function 2 : Partial Data Preprocessing
+# Function 3 : Runtime Environment Initialization
+# Function 4 : Implementation of Parameter Setting Function
+pre_exec_hook(){
+    init_debuglog
+    systemtool_check
+
+    if [ "$Param1" = "help" ] && [ $param_num -eq 2 ];then
+        print_usage $Param2
+        exit 0
+    elif [ "$Param1" = "help" ] && [ $param_num -gt 2 ];then
+        print_usage_guide
+        exit 0
+    fi
+
+    if [ "$Param1" = "get" ] || [ "$Param1" = "set" ];then
+        get_set_properties
+    fi
+
+    load_properties_from_cache
+    # check server_type if is auto
+    # if in debug mode, skip this check
+    if [ "$server_type" = "auto" ] && [ $DEBUG_MODE -eq 0 ];then
+        try_get_server_type
+    fi
+
+    extension_preprocess
+
+    # is param legel?
+    if [ "$Param2" = "chip" ];then
+        if [ $param_num -le 3 ];then
+            fmt_print "console" $ERROR "Command Format illegal"
+            echo "Command Format  : ./nicsensor.sh [slot] chip [slave] [i2c_command]"
+            exit 1
+        fi
+    fi
 
     # if the action is fru write, need pre-process fru data
     if [ "$Param2" = "fru" ];then