diff --git a/types/timestamp.go b/types/timestamp.go
index b7479ee..f15c896 100644
--- a/types/timestamp.go
+++ b/types/timestamp.go
@@ -73,3 +73,13 @@ func (t Timestamp) NowSub() time.Duration {
 func (t Timestamp) Sub(t2 time.Time) time.Duration {
 	return t2.Sub(t.Time())
 }
+
+// After 是否在指定時間後
+func (t Timestamp) After(t2 time.Time) bool {
+	return t.Time().After(t2)
+}
+
+// AfterNow 是否在目前時間後
+func (t Timestamp) AfterNow() bool {
+	return t.After(time.Now())
+}