diff --git a/utils/utils_reflect.go b/utils/utils_reflect.go
index 16aea491..babaf2c6 100644
--- a/utils/utils_reflect.go
+++ b/utils/utils_reflect.go
@@ -70,11 +70,11 @@ func GetConcretValue(value reflect.Value) reflect.Value {
 }
 
 func Interface2Slice(value interface{}) (retVal []interface{}) {
-	typeInfo := reflect.TypeOf(value)
-	if typeInfo.Kind() != reflect.Slice {
-		panic("list must be slice type!")
-	}
 	if value != nil {
+		typeInfo := reflect.TypeOf(value)
+		if typeInfo.Kind() != reflect.Slice {
+			panic("list must be slice type!")
+		}
 		valueInfo := reflect.ValueOf(value)
 		retVal = make([]interface{}, valueInfo.Len())
 		for i := 0; i < valueInfo.Len(); i++ {