diff --git a/app/Models/ProjectTask.php b/app/Models/ProjectTask.php
index 29e90bba6..44fb6912c 100644
--- a/app/Models/ProjectTask.php
+++ b/app/Models/ProjectTask.php
@@ -674,9 +674,6 @@ class ProjectTask extends AbstractModel
                         'owner' => 1,
                     ]);
                     $array[] = $uid;
-                    if ($this->parent_id) {
-                        break; // 子任务只能是一个负责人
-                    }
                 }
                 if ($array) {
                     if (count($older) == 0 && count($array) == 1 && $array[0] == User::userid()) {
diff --git a/resources/assets/js/pages/manage/components/TaskDetail.vue b/resources/assets/js/pages/manage/components/TaskDetail.vue
index 07be08aee..6869b5448 100644
--- a/resources/assets/js/pages/manage/components/TaskDetail.vue
+++ b/resources/assets/js/pages/manage/components/TaskDetail.vue
@@ -54,7 +54,7 @@
             <div slot="content">
                 <UserInput
                     v-model="ownerData.owner_userid"
-                    :multiple-max="1"
+                    :multiple-max="10"
                     :project-id="taskDetail.project_id"
                     :placeholder="$L('选择任务负责人')"
                     :transfer="false"
diff --git a/resources/assets/sass/pages/components/task-detail.scss b/resources/assets/sass/pages/components/task-detail.scss
index 9484ad9d8..5f7e3b5fe 100644
--- a/resources/assets/sass/pages/components/task-detail.scss
+++ b/resources/assets/sass/pages/components/task-detail.scss
@@ -425,6 +425,12 @@
                             }
                             .subtask-avatar {
                                 cursor: pointer;
+                                display: flex;
+                                flex-direction: column;
+                                .avatar-wrapper {
+                                    margin-top: 3px;
+                                    margin-bottom: -2px;
+                                }
                             }
                             .ivu-icon-ios-loading {
                                 animation: animation-icon-loading 0.6s infinite linear;