diff --git a/utils/typeconv.go b/utils/typeconv.go
index 39c5edc1..7c912dbc 100644
--- a/utils/typeconv.go
+++ b/utils/typeconv.go
@@ -18,6 +18,7 @@ import (
 
 var (
 	DefaultTimeValue = Str2Time("1970-01-01 00:00:00")
+	ZeroTimeValue    = time.Time{}
 )
 
 func GetConcretValue(value reflect.Value) reflect.Value {