diff --git a/cmd/web.go b/cmd/web.go
index 07852c1..111fbf8 100644
--- a/cmd/web.go
+++ b/cmd/web.go
@@ -18,6 +18,7 @@ import (
     "path/filepath"
     "os/exec"
     "github.com/ouqiang/gocron/modules/utils"
+    "github.com/ouqiang/gocron/modules/rpc/grpcpool"
 )
 
 // web服务器默认端口
@@ -220,6 +221,9 @@ func shutdown()  {
         serviceDelayTask := new(service.DelayTask)
         serviceDelayTask.Stop()
     }
+    // 释放gRPC连接池
+    grpcpool.Pool.ReleaseAll()
+
     taskNumInRunning := service.TaskNum.Num()
     logger.Infof("正在运行的任务有%d个", taskNumInRunning)
     if taskNumInRunning > 0 {
diff --git a/modules/rpc/grpcpool/grpc_pool.go b/modules/rpc/grpcpool/grpc_pool.go
index 9084e86..a550278 100644
--- a/modules/rpc/grpcpool/grpc_pool.go
+++ b/modules/rpc/grpcpool/grpc_pool.go
@@ -74,6 +74,15 @@ func (p *GRPCPool) Release(addr string) {
     delete(p.conns, addr)
 }
 
+// 释放所有连接池
+func (p *GRPCPool) ReleaseAll()  {
+    p.Lock()
+    defer p.Unlock()
+    for _, pool := range(p.conns) {
+        pool.Release()
+    }
+}
+
 // 初始化底层连接池
 func (p *GRPCPool) newCommonPool(addr string) (error) {
     p.Lock()
diff --git a/routers/task/task.go b/routers/task/task.go
index d0c9ee5..2f32b75 100644
--- a/routers/task/task.go
+++ b/routers/task/task.go
@@ -28,7 +28,7 @@ type TaskForm struct {
     HostId int16
     Remark string
     NotifyStatus int8 `binding:"In(1,2,3)"`
-    NotifyType int8 `binding:"In(1,2)"`
+    NotifyType int8 `binding:"In(1,2,3)"`
     NotifyReceiverId string
 }
 
@@ -245,7 +245,7 @@ func addTaskToTimer(id int)  {
     }
 
     taskService := service.Task{}
-    taskService.Add(&task)
+    taskService.Add(task)
 }
 
 // 解析查询参数
diff --git a/service/task.go b/service/task.go
index 20fa36e..e11298f 100644
--- a/service/task.go
+++ b/service/task.go
@@ -101,12 +101,12 @@ func (task *Task) Initialize() {
 // 批量添加任务
 func (task *Task) BatchAdd(tasks []models.TaskHost)  {
     for _, item := range tasks {
-        task.Add(&item)
+        task.Add(item)
     }
 }
 
 // 添加任务
-func (task *Task) Add(taskModel *models.TaskHost) {
+func (task *Task) Add(taskModel models.TaskHost) {
     taskFunc := createJob(taskModel)
     if taskFunc == nil {
         logger.Error("创建任务处理Job失败,不支持的任务协议#", taskModel.Protocol)
@@ -129,11 +129,11 @@ func (task *Task) StopAll()  {
 
 // 直接运行任务
 func (task *Task) Run(taskModel models.TaskHost)  {
-    go createJob(&taskModel)()
+    go createJob(taskModel)()
 }
 
 type Handler interface {
-    Run(taskModel *models.TaskHost) (string, error)
+    Run(taskModel models.TaskHost) (string, error)
 }
 
 
@@ -143,7 +143,7 @@ type HTTPHandler struct{}
 // http任务执行时间不超过300秒
 const HttpExecTimeout = 300
 
-func (h *HTTPHandler) Run(taskModel *models.TaskHost) (result string, err error) {
+func (h *HTTPHandler) Run(taskModel models.TaskHost) (result string, err error) {
     if taskModel.Timeout <= 0 || taskModel.Timeout > HttpExecTimeout {
         taskModel.Timeout = HttpExecTimeout
     }
@@ -159,7 +159,7 @@ func (h *HTTPHandler) Run(taskModel *models.TaskHost) (result string, err error)
 // RPC调用执行任务
 type RPCHandler struct {}
 
-func (h *RPCHandler) Run(taskModel *models.TaskHost) (result string, err error)  {
+func (h *RPCHandler) Run(taskModel models.TaskHost) (result string, err error)  {
     taskRequest := new(pb.TaskRequest)
     taskRequest.Timeout = int32(taskModel.Timeout)
     taskRequest.Command = taskModel.Command
@@ -169,7 +169,7 @@ func (h *RPCHandler) Run(taskModel *models.TaskHost) (result string, err error)
 
 
 // 创建任务日志
-func createTaskLog(taskModel *models.TaskHost, status models.Status) (int64, error) {
+func createTaskLog(taskModel models.TaskHost, status models.Status) (int64, error) {
     taskLogModel := new(models.TaskLog)
     taskLogModel.TaskId = taskModel.Id
     taskLogModel.Name = taskModel.Task.Name
@@ -205,7 +205,7 @@ func updateTaskLog(taskLogId int64, taskResult TaskResult) (int64, error) {
 
 }
 
-func createJob(taskModel *models.TaskHost) cron.FuncJob {
+func createJob(taskModel models.TaskHost) cron.FuncJob {
     var handler Handler = createHandler(taskModel)
     if handler == nil {
         return nil
@@ -226,7 +226,7 @@ func createJob(taskModel *models.TaskHost) cron.FuncJob {
     return taskFunc
 }
 
-func createHandler(taskModel *models.TaskHost) Handler  {
+func createHandler(taskModel models.TaskHost) Handler  {
     var handler Handler = nil
     switch taskModel.Protocol {
         case models.TaskHTTP:
@@ -235,10 +235,11 @@ func createHandler(taskModel *models.TaskHost) Handler  {
             handler = new(RPCHandler)
     }
 
+
     return handler;
 }
 
-func beforeExecJob(taskModel *models.TaskHost) (taskLogId int64)  {
+func beforeExecJob(taskModel models.TaskHost) (taskLogId int64)  {
     if taskModel.Multi == 0 && runInstance.has(taskModel.Id) {
         createTaskLog(taskModel, models.Cancel)
         return
@@ -257,7 +258,7 @@ func beforeExecJob(taskModel *models.TaskHost) (taskLogId int64)  {
     return taskLogId
 }
 
-func afterExecJob(taskModel *models.TaskHost, taskResult TaskResult, taskLogId int64)  {
+func afterExecJob(taskModel models.TaskHost, taskResult TaskResult, taskLogId int64)  {
     if taskResult.Err != nil {
         taskResult.Result = taskResult.Err.Error() + "\n" + taskResult.Result
     }
@@ -270,7 +271,7 @@ func afterExecJob(taskModel *models.TaskHost, taskResult TaskResult, taskLogId i
 }
 
 // 发送任务结果通知
-func SendNotification(taskModel *models.TaskHost, taskResult TaskResult)  {
+func SendNotification(taskModel models.TaskHost, taskResult TaskResult)  {
     var statusName string
     // 未开启通知
     if taskModel.NotifyStatus == 0 {
@@ -301,7 +302,7 @@ func SendNotification(taskModel *models.TaskHost, taskResult TaskResult)  {
 }
 
 // 执行具体任务
-func execJob(handler Handler, taskModel *models.TaskHost) TaskResult  {
+func execJob(handler Handler, taskModel models.TaskHost) TaskResult  {
     defer func() {
        if err := recover(); err != nil {
            logger.Error("panic#service/task.go:execJob#", err)