diff --git a/Task/TaskExecute.php b/Task/TaskExecute.php
index f20e904..232c4a7 100644
--- a/Task/TaskExecute.php
+++ b/Task/TaskExecute.php
@@ -2,6 +2,7 @@
 
 namespace Kiri\Server\Task;
 
+use Exception;
 use Kiri\Server\ServerInterface;
 
 class TaskExecute implements TaskInterface
@@ -9,14 +10,19 @@ class TaskExecute implements TaskInterface
 
 
     /**
-     * @param OnTaskInterface $handler
+     * @param string $handler
      * @param mixed $data
      * @param int $dstWorkerId
      * @param callable|null $finishFinishCallback
      * @return void
+     * @throws
      */
-    public function task(OnTaskInterface $handler, mixed $data, int $dstWorkerId = -1, ?callable $finishFinishCallback = null): void
+    public function task(string $handler, mixed $data, int $dstWorkerId = -1, ?callable $finishFinishCallback = null): void
     {
+        $array = class_implements($handler, false);
+        if (!in_array(OnTaskInterface::class, $array, true)) {
+            throw new Exception('Task is not implement OnTaskInterface');
+        }
         $server = \Kiri::getDi()->get(ServerInterface::class);
 
         $server->task([$handler, $data], $dstWorkerId, $finishFinishCallback);
@@ -24,14 +30,19 @@ class TaskExecute implements TaskInterface
 
 
     /**
-     * @param OnTaskInterface $handler
+     * @param string $handler
      * @param mixed $data
      * @param float $timeout
      * @param int $dstWorkerId
      * @return mixed
+     * @throws
      */
-    public function taskWait(OnTaskInterface $handler, mixed $data, float $timeout = 0.5, int $dstWorkerId = -1): mixed
+    public function taskWait(string $handler, mixed $data, float $timeout = 0.5, int $dstWorkerId = -1): mixed
     {
+        $array = class_implements($handler, false);
+        if (!in_array(OnTaskInterface::class, $array, true)) {
+            throw new Exception('Task is not implement OnTaskInterface');
+        }
         $server = \Kiri::getDi()->get(ServerInterface::class);
 
         return $server->taskwait([$handler, $data], $timeout, $dstWorkerId);
diff --git a/Task/TaskInterface.php b/Task/TaskInterface.php
index 4c35149..a3950d0 100644
--- a/Task/TaskInterface.php
+++ b/Task/TaskInterface.php
@@ -7,23 +7,23 @@ interface TaskInterface
 
 
     /**
-     * @param OnTaskInterface $handler
+     * @param string $handler
      * @param mixed $data
      * @param int $dstWorkerId
      * @param callable|null $finishFinishCallback
      * @return void
      */
-    public function task(OnTaskInterface $handler, mixed $data, int $dstWorkerId = -1, ?callable $finishFinishCallback = null): void;
+    public function task(string $handler, mixed $data, int $dstWorkerId = -1, ?callable $finishFinishCallback = null): void;
 
 
     /**
-     * @param OnTaskInterface $handler
+     * @param string $handler
      * @param mixed $data
      * @param float $timeout
      * @param int $dstWorkerId
      * @return mixed
      */
-    public function taskWait(OnTaskInterface $handler, mixed $data, float $timeout = 0.5, int $dstWorkerId = -1): mixed;
+    public function taskWait(string $handler, mixed $data, float $timeout = 0.5, int $dstWorkerId = -1): mixed;
 
 
     /**