diff --git a/shared/domain/activityField/signInField.ts b/shared/domain/activityField/signInField.ts
index e88768cf2..d757b49ce 100644
--- a/shared/domain/activityField/signInField.ts
+++ b/shared/domain/activityField/signInField.ts
@@ -82,7 +82,11 @@ export class SignInData extends ActivityBase {
 
         let date = new Date();
         this.beginTime = moment(date.setDate(this.startDate)).startOf('day').add(REFRESH_TIME, 'h').valueOf();
-        this.endTime = moment(date.setDate(this.endDate)).endOf('day').add(REFRESH_TIME, 'h').valueOf();
+        if (this.startDate > this.endDate) {//跨度下个月
+            this.endTime = moment(date.setDate(this.endDate)).endOf('day').add(REFRESH_TIME, 'h').add(1, 'month').valueOf();
+        } else {
+            this.endTime = moment(date.setDate(this.endDate)).endOf('day').add(REFRESH_TIME, 'h').valueOf();
+        }
         this.roundIndex = moment().diff(moment(SERVER_OPEN_TIME).startOf('months'), 'months') + 1;
         if (this.type === ACTIVITY_TYPE.NEW_PLAYER_SIGN_IN) {
             this.roundIndex = 1;