diff --git a/timer.go b/timer.go
index 9a2313b..e2ae8b4 100644
--- a/timer.go
+++ b/timer.go
@@ -2,6 +2,7 @@ package startimer
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"sort"
 	"sync"
@@ -96,6 +97,40 @@ func (t *StarTimer) NextTimer() time.Time {
 	return t.nextDate
 }
 
+func (t *StarTimer) NextTimerAfterDate(date time.Time) time.Time {
+	return t.parseNextDate(date, true)
+}
+
+func (t *StarTimer) ExportRepeats() (string, error) {
+	var rep []Repeats
+	for _, r := range t.repeat {
+		rep = append(rep, *r)
+	}
+	data, err := json.Marshal(rep)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
+func (t *StarTimer) ImportRepeats(r string) error {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	if t.running {
+		return errors.New("coonot import repeats to already running timer")
+	}
+	var rep []Repeats
+	err := json.Unmarshal([]byte(r), &rep)
+	if err != nil {
+		return err
+	}
+	t.repeat = make([]*Repeats, 0, len(rep))
+	for _, v := range rep {
+		t.repeat = append(t.repeat, &v)
+	}
+	return nil
+}
+
 func (t *StarTimer) BaseDate() time.Time {
 	return t.base
 }
@@ -113,7 +148,7 @@ func (t *StarTimer) Run() error {
 	if t.running {
 		return nil
 	}
-	t.nextDate = t.parseNextDate(t.base)
+	t.nextDate = t.parseNextDate(time.Now(), false)
 	if t.nextDate.Before(time.Now()) {
 		return errors.New("Invalid Timer Options,Please Check")
 	}
@@ -127,7 +162,7 @@ func (t *StarTimer) Run() error {
 			t.mu.Unlock()
 			select {
 			case <-t.timer.C:
-				t.nextDate = t.parseNextDate(t.nextDate)
+				t.nextDate = t.parseNextDate(t.nextDate, false)
 				if t.nextDate.Before(now) {
 					t.Stop()
 				}
@@ -145,7 +180,7 @@ func (t *StarTimer) Run() error {
 	return nil
 }
 
-func (t *StarTimer) parseNextDate(base time.Time) time.Time {
+func (t *StarTimer) parseNextDate(base time.Time, isMock bool) time.Time {
 	if len(t.repeat) == 0 {
 		return time.Time{}
 	}
@@ -155,7 +190,7 @@ func (t *StarTimer) parseNextDate(base time.Time) time.Time {
 			continue
 		}
 		if d.Every {
-			dates = append(dates, t.parseEveryNextDate(base, d)...)
+			dates = append(dates, t.parseEveryNextDate(base, d, isMock)...)
 		} else {
 			dates = append(dates, t.parseStaticNextDate(base, d))
 		}
@@ -226,13 +261,15 @@ func (t *StarTimer) parseStaticNextDate(base time.Time, r *Repeats) time.Time {
 	return target
 }
 
-func (t *StarTimer) parseEveryNextDate(target time.Time, r *Repeats) []time.Time {
+func (t *StarTimer) parseEveryNextDate(target time.Time, r *Repeats, isMock bool) []time.Time {
 	var res []time.Time
 	if r.Every { //定期日期
 		for idx, d := range r.Repeat {
 			if d.baseDate.Unix() == -62135596800 {
 				d.baseDate = t.base
-				r.Repeat[idx] = d
+				if !isMock {
+					r.Repeat[idx] = d
+				}
 			}
 			if d.baseDate.After(target) {
 				res = append(res, d.baseDate)
@@ -243,7 +280,9 @@ func (t *StarTimer) parseEveryNextDate(target time.Time, r *Repeats) []time.Time
 				for {
 					d.baseDate = d.baseDate.Add(time.Second * time.Duration(int(d.Value)))
 					if d.baseDate.After(target) {
-						r.Repeat[idx] = d
+						if !isMock {
+							r.Repeat[idx] = d
+						}
 						break
 					}
 				}
@@ -252,7 +291,9 @@ func (t *StarTimer) parseEveryNextDate(target time.Time, r *Repeats) []time.Time
 				for {
 					d.baseDate = d.baseDate.Add(time.Minute * time.Duration(int(d.Value)))
 					if d.baseDate.After(target) {
-						r.Repeat[idx] = d
+						if !isMock {
+							r.Repeat[idx] = d
+						}
 						break
 					}
 				}
@@ -261,7 +302,9 @@ func (t *StarTimer) parseEveryNextDate(target time.Time, r *Repeats) []time.Time
 				for {
 					d.baseDate = d.baseDate.Add(time.Hour * time.Duration(int(d.Value)))
 					if d.baseDate.After(target) {
-						r.Repeat[idx] = d
+						if !isMock {
+							r.Repeat[idx] = d
+						}
 						break
 					}
 				}
@@ -270,7 +313,9 @@ func (t *StarTimer) parseEveryNextDate(target time.Time, r *Repeats) []time.Time
 				for {
 					d.baseDate = d.baseDate.Add(time.Hour * 24 * time.Duration(int(d.Value)))
 					if d.baseDate.After(target) {
-						r.Repeat[idx] = d
+						if !isMock {
+							r.Repeat[idx] = d
+						}
 						break
 					}
 				}
@@ -279,7 +324,9 @@ func (t *StarTimer) parseEveryNextDate(target time.Time, r *Repeats) []time.Time
 				for {
 					d.baseDate = d.baseDate.AddDate(0, int(d.Value), 0)
 					if d.baseDate.After(target) {
-						r.Repeat[idx] = d
+						if !isMock {
+							r.Repeat[idx] = d
+						}
 						break
 					}
 				}
@@ -288,7 +335,9 @@ func (t *StarTimer) parseEveryNextDate(target time.Time, r *Repeats) []time.Time
 				for {
 					d.baseDate = d.baseDate.AddDate(int(d.Value), 0, 0)
 					if d.baseDate.After(target) {
-						r.Repeat[idx] = d
+						if !isMock {
+							r.Repeat[idx] = d
+						}
 						break
 					}
 				}
diff --git a/typed.go b/typed.go
index 9fbdcd9..6f0a101 100644
--- a/typed.go
+++ b/typed.go
@@ -18,14 +18,14 @@ const (
 )
 
 type Repeats struct {
-	Repeat []Repeat
-	Every  bool // false=static true=every
+	Repeat []Repeat `json:"repeat"`
+	Every  bool     `json:"every"` // false=static true=every
 }
 
 type Repeat struct {
-	Unit     Unit
+	Unit     Unit `json:"unit"`
 	baseDate time.Time
-	Value    uint32
+	Value    uint32 `json:"value"`
 }
 
 type StarTimer struct {
@@ -46,8 +46,8 @@ type TimerOption struct {
 	idx     uint8
 	repeats *Repeats
 	tasks   func()
-	date   time.Time
-	repeat Repeat
+	date    time.Time
+	repeat  Repeat
 }
 
 func WithRepeats(r *Repeats) TimerOptions {