diff --git a/application/common/Model/Task.php b/application/common/Model/Task.php
index a392c37..24d7f30 100644
--- a/application/common/Model/Task.php
+++ b/application/common/Model/Task.php
@@ -238,7 +238,7 @@ class Task extends CommonModel
         if ($parentCode) {
             $parentTask = self::where(['code' => $parentCode])->find();
             if (!$parentTask) {
-                return error(5, '父任务无效');
+                return error(8, '父任务无效');
             }
             if ($parentTask['deleted']) {
                 return error(6, '父任务在回收站中无法编辑');
diff --git a/application/common/Model/TaskWorkTime.php b/application/common/Model/TaskWorkTime.php
index b2c2ca0..83bfbce 100644
--- a/application/common/Model/TaskWorkTime.php
+++ b/application/common/Model/TaskWorkTime.php
@@ -42,8 +42,8 @@ class TaskWorkTime extends CommonModel
         if (!$beginTime) {
             return error(4, '请选择开始时间');
         }
-        if (!$num || !is_numeric($num)) {
-            return error(5, '请输入有效工时');
+        if (!$num || $num < 0 || !is_numeric($num)) {
+            return error(6, '请输入有效工时');
         }
         $data = [
             'create_time' => nowTime(),
diff --git a/application/project/controller/Task.php b/application/project/controller/Task.php
index 1347c99..0885db4 100644
--- a/application/project/controller/Task.php
+++ b/application/project/controller/Task.php
@@ -464,6 +464,12 @@ class Task extends BasicApi
         $this->success('', $list);
     }
 
+    /**
+     * 工时间录
+     * @throws DataNotFoundException
+     * @throws DbException
+     * @throws ModelNotFoundException
+     */
     public function _taskWorkTimeList()
     {
         $taskCode = Request::param('taskCode');
@@ -477,6 +483,12 @@ class Task extends BasicApi
         $this->success('', $workTimeList);
     }
 
+    /**
+     * 记录工时
+     * @throws DataNotFoundException
+     * @throws DbException
+     * @throws ModelNotFoundException
+     */
     public function saveTaskWorkTime()
     {
         $param = Request::only('beginTime,num,content,taskCode');
@@ -487,6 +499,13 @@ class Task extends BasicApi
         $this->success();
     }
 
+    /**
+     * 修改工时
+     * @return array
+     * @throws DataNotFoundException
+     * @throws DbException
+     * @throws ModelNotFoundException
+     */
     public function editTaskWorkTime()
     {
         $param = Request::only('beginTime,num,content');
@@ -505,6 +524,13 @@ class Task extends BasicApi
         $this->success();
     }
 
+    /**
+     * 删除工时
+     * @return array
+     * @throws DataNotFoundException
+     * @throws DbException
+     * @throws ModelNotFoundException
+     */
     public function delTaskWorkTime()
     {
         $code = Request::param('code');