diff --git a/docs/api.md b/docs/api.md
index a78b53f..8058eed 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -301,6 +301,7 @@ body:
 {
     "address": "钱包地址",
     "boost": 1, // 正常值为1
+    "boostExpire": 0, // 计算得分时, 如果boost过期, 即使boost大于1, 也不计算boost
     "twitterId": "",
     "twitterName": "",
     "discordId": "",
diff --git a/src/controllers/sign.controller.ts b/src/controllers/sign.controller.ts
index 934d576..74008eb 100644
--- a/src/controllers/sign.controller.ts
+++ b/src/controllers/sign.controller.ts
@@ -96,6 +96,7 @@ class SignController extends BaseController {
     let result = {
       address: user.address,
       boost: user.boost || 1,
+      boostExpire: user.boostExpire,
       twitterId: user.twitterId,
       twitterName: user.twitterName,
       discordId: user.discordId,
diff --git a/src/models/ActivityUser.ts b/src/models/ActivityUser.ts
index b31ce53..94019e6 100644
--- a/src/models/ActivityUser.ts
+++ b/src/models/ActivityUser.ts
@@ -90,6 +90,12 @@ class ActivityUserClass extends BaseModule {
 
   @prop({default: 1})
   public boost: number
+  /**
+   * boost过期时间
+   * 计算得分时, 如果boost过期, 则不计算boost
+   */
+  @prop()
+  public boostExpire?: Date
 
   @prop()
   public lastLogin?: Date
diff --git a/src/tasks/ShareCode.ts b/src/tasks/ShareCode.ts
index 956768a..583a5ec 100644
--- a/src/tasks/ShareCode.ts
+++ b/src/tasks/ShareCode.ts
@@ -39,6 +39,7 @@ export default class ShareCode extends ITask {
     // According to configuration, add score to user who invite current user
     if (cfg.autoclaim) {
       try {
+        await super.claimReward(task);
         await updateInviteScore(this.params.user, scores, 0, task.task)
       } catch(err) {
         console.log(err)
@@ -48,6 +49,7 @@ export default class ShareCode extends ITask {
   }
 
   public async claimReward(task: TaskStatus) {
+    await super.claimReward(task);
     let cfg = this.params.activity.tasks.find((t: TaskCfg) => t.id === task.id)
     let scores = cfg.params.score;
     await updateInviteScore(this.params.user, scores, 0, task.task)
diff --git a/src/tasks/base/ITask.ts b/src/tasks/base/ITask.ts
index 6a20fb4..466cf37 100644
--- a/src/tasks/base/ITask.ts
+++ b/src/tasks/base/ITask.ts
@@ -21,9 +21,13 @@ export abstract class ITask {
     if (!cfg.score) {
       return;
     }
+    let score = cfg.score
+    if (user.boost > 1 && Date.now() < user.boostExpire) {
+      score = Math.floor(score * user.boost)
+    }
     await updateRankScore({
       user: user.id,
-      score: cfg.score,
+      score: score,
       activity: user.activity,
       scoreType: cfg.task,
       scoreParams: {
diff --git a/src/utils/date.util.ts b/src/utils/date.util.ts
index 76b98ee..68184fc 100644
--- a/src/utils/date.util.ts
+++ b/src/utils/date.util.ts
@@ -7,8 +7,14 @@ export const formatDate = (date: Date): string => {
 };
 
 // get formated datestring of yesterday
-export const yesterday = () => {
-  const date = new Date();
+export const yesterday = (date?: Date) => {
+  date = date || new Date();
   date.setDate(date.getDate() - 1);
   return date;
-};
\ No newline at end of file
+};
+
+export const nextday = (date?: Date) => {
+  date = date || new Date();
+  date.setDate(date.getDate() + 1);
+  return date;
+}
\ No newline at end of file