diff --git a/app/Models/ProjectTask.php b/app/Models/ProjectTask.php
index 41e28dc74..6454b1b0b 100644
--- a/app/Models/ProjectTask.php
+++ b/app/Models/ProjectTask.php
@@ -363,7 +363,8 @@ class ProjectTask extends AbstractModel
         $content    = $data['content'];
         $times      = $data['times'];
         $owner      = $data['owner'];
-        $add_assist = intval($data['add_assist']);
+        $add_assist = intval($data['add_assist']);  // 将自己添加到参与者
+        $assist     = $data['assist'];              // 参与者，此项设置时 add_assist 无效
         $subtasks   = $data['subtasks'];
         $p_level    = intval($data['p_level']);
         $p_name     = $data['p_name'];
@@ -438,9 +439,12 @@ class ProjectTask extends AbstractModel
         }
         $owner = $tmpArray;
         // 协助人员
-        $assist = [];
-        if (!in_array($userid, $owner) && $add_assist) {
-            $assist = [$userid];
+        $assist = is_array($assist) ? $assist : [];
+        if (empty($assist)) {
+            // 添加自己
+            if (!in_array($userid, $owner) && $add_assist) {
+                $assist = [$userid];
+            }
         }
         // 创建人
         $task->userid = $userid;
diff --git a/resources/assets/js/pages/manage/components/TaskAdd.vue b/resources/assets/js/pages/manage/components/TaskAdd.vue
index 9cc208f0c..391c30d93 100644
--- a/resources/assets/js/pages/manage/components/TaskAdd.vue
+++ b/resources/assets/js/pages/manage/components/TaskAdd.vue
@@ -78,7 +78,7 @@
                     type="datetimerange"
                     @on-change="taskTimeChange(addData.times)"/>
             </FormItem>
-            <FormItem :label="$L('任务负责人')" >
+            <FormItem :label="$L('负责人')" >
                 <UserSelect
                     v-model="addData.owner"
                     :multiple-max="10"
@@ -86,12 +86,16 @@
                     :project-id="addData.project_id"
                     :avatar-size="24"
                     border/>
-                <div v-if="showAddAssist" class="task-add-assist">
-                    <Checkbox v-model="addData.add_assist" :true-value="1" :false-value="0">{{$L('加入任务协助人员列表')}}</Checkbox>
-                    <ETooltip :disabled="$isEEUiApp || windowTouch" :content="$L('你不是任务负责人时建议加入任务协助人员列表')">
-                        <Icon type="ios-alert-outline" />
-                    </ETooltip>
-                </div>
+            </FormItem>
+            <FormItem :label="$L('协助人员')" >
+                <UserSelect
+                    v-model="addData.assist"
+                    :multiple-max="10"
+                    :title="$L('选择任务协助人员')"
+                    :project-id="addData.project_id"
+                    :disabled-choice="addData.owner"
+                    :avatar-size="24"
+                    border/>
             </FormItem>
             <FormItem>
                 <div slot="label">
@@ -223,7 +227,7 @@ export default {
                 name: "",
                 content: "",
                 owner: [],
-                add_assist: 1,
+                assist: [],
                 project_id: 0,
                 column_id: 0,
                 times: [],
@@ -306,14 +310,18 @@ export default {
                 }
             }
             return 0;
-        },
-
-        showAddAssist() {
-            return !this.addData.owner.includes(this.userId);
         }
     },
 
     watch: {
+        'addData.owner'(owner) {
+            this.addData.assist = this.addData.assist.filter(item => {
+                return owner.indexOf(item) === -1;
+            })
+            if (owner.length === 0 && this.addData.assist.length === 0) {
+                this.addData.assist = [this.userId];
+            }
+        },
         'addData.project_id'(projectId) {
             if (projectId > 0) {
                 $A.IDBSave("cacheAddTaskProjectId", projectId);
@@ -537,7 +545,7 @@ export default {
                         name: "",
                         content: "",
                         owner: [],
-                        add_assist: 1,
+                        assist: [],
                         column_id: 0,
                         times: [],
                         subtasks: [],
diff --git a/resources/assets/sass/pages/components/task-add.scss b/resources/assets/sass/pages/components/task-add.scss
index 5de1532c7..b216bf161 100644
--- a/resources/assets/sass/pages/components/task-add.scss
+++ b/resources/assets/sass/pages/components/task-add.scss
@@ -162,6 +162,7 @@
             .taskfont {
                 display: inline-block;
                 transform: scale(0.9);
+                opacity: 0.8;
                 font-size: 12px;
                 margin-right: 0;
             }
@@ -210,16 +211,6 @@
             width: 100%;
         }
     }
-    .task-add-assist {
-        margin-top: 6px;
-        display: flex;
-        align-items: center;
-        justify-content: flex-end;
-        .ivu-icon {
-            font-size: 16px;
-            color: $primary-desc-color;
-        }
-    }
     .ivu-modal-footer {
         padding: 26px 0 22px !important;
     }