diff --git a/core.go b/core.go
index e36e085..869ce6b 100644
--- a/core.go
+++ b/core.go
@@ -23,9 +23,9 @@ type DateSlice struct {
 }
 
 type TimeArrow struct {
-	Id    int           `json:"id"`
-	Group string        `json:"group"`
-	Type  TimeArrowType `json:"type"`
+	TimeArrowId int           `json:"time_arrow_id"`
+	Group       string        `json:"group"`
+	Type        TimeArrowType `json:"type"`
 	//可选
 	DayOfWeek  []int       `json:"day_of_week"`
 	DayOfMonth []int       `json:"day_of_month"`