diff --git a/lego/sys/timewheel/options.go b/lego/sys/timewheel/options.go
index c8ec3e146..aae627cd7 100644
--- a/lego/sys/timewheel/options.go
+++ b/lego/sys/timewheel/options.go
@@ -10,7 +10,6 @@ type Option func(*Options)
 type Options struct {
 	Tick       time.Duration //不小于 10毫秒
 	BucketsNum int
-	IsSyncPool bool
 }
 
 func SetTick(v time.Duration) Option {
@@ -25,17 +24,10 @@ func SetBucketsNum(v int) Option {
 	}
 }
 
-func SetIsSyncPool(v bool) Option {
-	return func(o *Options) {
-		o.IsSyncPool = v
-	}
-}
-
 func newOptions(config map[string]interface{}, opts ...Option) Options {
 	options := Options{
 		Tick:       time.Second,
 		BucketsNum: 1024,
-		IsSyncPool: true,
 	}
 	if config != nil {
 		mapstructure.Decode(config, &options)
@@ -58,7 +50,6 @@ func newOptionsByOption(opts ...Option) Options {
 	options := Options{
 		Tick:       1000,
 		BucketsNum: 1024,
-		IsSyncPool: true,
 	}
 	for _, o := range opts {
 		o(&options)
diff --git a/lego/sys/timewheel/timewheel.go b/lego/sys/timewheel/timewheel.go
index 6f327d3a4..8381f45f3 100644
--- a/lego/sys/timewheel/timewheel.go
+++ b/lego/sys/timewheel/timewheel.go
@@ -2,8 +2,10 @@ package timewheel
 
 import (
 	"context"
+	"fmt"
 	"go_dreamfactory/lego"
 	"go_dreamfactory/lego/sys/log"
+	"runtime"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -23,10 +25,9 @@ func newsys(options Options) (sys *TimeWheel, err error) {
 		currentIndex:  0,
 
 		// signal
-		addC:     make(chan *Task, 1024*5),
-		removeC:  make(chan *Task, 1024*2),
-		stopC:    make(chan struct{}),
-		syncPool: options.IsSyncPool,
+		addC:    make(chan *Task, 1024*5),
+		removeC: make(chan *Task, 1024*2),
+		stopC:   make(chan struct{}),
 	}
 
 	for i := 0; i < options.BucketsNum; i++ {
@@ -56,9 +57,9 @@ type (
 		round    int
 		args     []interface{}
 		callback func(*Task, ...interface{})
-		async    bool
-		stop     bool
-		circle   bool
+		async    bool //异步执行
+		stop     bool //是否停止
+		circle   bool //是否循环
 	}
 	TimeWheel struct {
 		randomID      int64
@@ -74,7 +75,6 @@ type (
 		removeC       chan *Task
 		stopC         chan struct{}
 		exited        bool
-		syncPool      bool
 	}
 )
 
@@ -162,20 +162,22 @@ func (this *TimeWheel) schduler() {
 
 // 清理
 func (this *TimeWheel) collectTask(task *Task) {
-	index := this.bucketIndexes[task.id]
-	delete(this.bucketIndexes, task.id)
-	delete(this.buckets[index], task.id)
-
-	if this.syncPool && !task.circle {
-		defaultTaskPool.put(task)
+	if index, ok := this.bucketIndexes[task.id]; ok {
+		delete(this.bucketIndexes, task.id)
+		delete(this.buckets[index], task.id)
 	}
 }
 
+func (this *TimeWheel) recoverTask(task *Task) {
+	defaultTaskPool.put(task)
+}
+
 func (this *TimeWheel) handleTick() {
 	bucket := this.buckets[this.currentIndex]
 	for k, task := range bucket {
 		if task.stop {
 			this.collectTask(task)
+			this.recoverTask(task)
 			continue
 		}
 
@@ -183,25 +185,32 @@ func (this *TimeWheel) handleTick() {
 			bucket[k].round--
 			continue
 		}
-
+		this.collectTask(task)
 		if task.async {
 			go func(_task *Task) {
+				defer func() { //程序异常 收集异常信息传递给前端显示
+					if r := recover(); r != nil {
+						buf := make([]byte, 4096)
+						l := runtime.Stack(buf, false)
+						err := fmt.Errorf("%v: %s", r, buf[:l])
+						log.Errorf("[timewheel] calltask err:%s", err.Error())
+					}
+				}()
 				this.calltask(_task, _task.args...)
-				this.collectTask(_task)
+				if _task.circle {
+					this.putCircle(_task, true)
+				} else {
+					this.recoverTask(_task)
+				}
 			}(task)
 		} else {
-			// optimize gopool
 			this.calltask(task, task.args...)
-		}
-
-		// circle
-		if task.circle {
-			this.collectTask(task)
-			this.putCircle(task, modeIsCircle)
-			continue
-		}
-		if !task.async { //异步模式下不能清理
-			this.collectTask(task)
+			//循环执行
+			if task.circle {
+				this.putCircle(task, true)
+			} else {
+				this.recoverTask(task)
+			}
 		}
 	}
 
@@ -231,12 +240,7 @@ func (this *TimeWheel) addAny(delay time.Duration, circle, async bool, callback
 	id := this.genUniqueID()
 
 	var task *Task
-	if this.syncPool {
-		task = defaultTaskPool.get()
-	} else {
-		task = new(Task)
-	}
-
+	task = defaultTaskPool.get()
 	task.delay = delay
 	task.id = id
 	task.args = agr
@@ -286,6 +290,7 @@ func (this *TimeWheel) calculateIndex(delay time.Duration) (index int) {
 
 func (this *TimeWheel) remove(task *Task) {
 	this.collectTask(task)
+	this.recoverTask(task)
 }
 
 func (this *TimeWheel) NewTimer(delay time.Duration) *Timer {