diff --git a/app/Http/Controllers/Api/ProjectController.php b/app/Http/Controllers/Api/ProjectController.php
index 178beca24..59ba74b57 100755
--- a/app/Http/Controllers/Api/ProjectController.php
+++ b/app/Http/Controllers/Api/ProjectController.php
@@ -311,6 +311,7 @@ class ProjectController extends AbstractController
      * @apiParam {Number} [archive_days]    自动归档天数
      * @apiParam {String} [ai_auto_analyze] AI自动分析（open|close）
      * @apiParam {String} [task_template_share] 共享模板（open|close）
+     * @apiParam {String} [department_owner_view] 部门负责人视角可见（open|close）
      *
      * @apiSuccess {Number} ret     返回状态码（1正确、0错误）
      * @apiSuccess {String} msg     返回信息（错误描述）
@@ -327,6 +328,7 @@ class ProjectController extends AbstractController
         $archive_days = intval(Request::input('archive_days'));
         $ai_auto_analyze = Request::input('ai_auto_analyze');
         $task_template_share = Request::input('task_template_share');
+        $department_owner_view = Request::input('department_owner_view');
         if (mb_strlen($name) < 2) {
             return Base::retError('项目名称不可以少于2个字');
         } elseif (mb_strlen($name) > 32) {
@@ -342,7 +344,7 @@ class ProjectController extends AbstractController
         }
         //
         $project = Project::userProject($project_id, true, true);
-        AbstractModel::transaction(function () use ($archive_days, $archive_method, $ai_auto_analyze, $task_template_share, $desc, $name, $project) {
+        AbstractModel::transaction(function () use ($archive_days, $archive_method, $ai_auto_analyze, $task_template_share, $department_owner_view, $desc, $name, $project) {
             if ($project->name != $name) {
                 $project->addLog("修改项目名称", [
                     'change' => [$project->name, $name]
@@ -380,6 +382,12 @@ class ProjectController extends AbstractController
                 ]);
                 $project->task_template_share = $task_template_share;
             }
+            if (in_array($department_owner_view, ['open', 'close']) && $project->department_owner_view != $department_owner_view) {
+                $project->addLog("修改负责人视角可见", [
+                    'change' => [$project->department_owner_view, $department_owner_view]
+                ]);
+                $project->department_owner_view = $department_owner_view;
+            }
             $project->save();
         });
         $project->pushMsg('update');
@@ -1406,15 +1414,12 @@ class ProjectController extends AbstractController
             $query->on('project_sub_task_visibility_users.task_id', '=', 'project_tasks.parent_id');
             $query->where('project_sub_task_visibility_users.userid', $userid);
         });
-        $builder->where(function ($query) use ($userid, $departmentView) {
+        $builder->where(function ($query) use ($userid) {
             $query->where("project_tasks.visibility", 1);
             $query->orWhere("project_users.userid", $userid);
             $query->orWhere("project_task_users.userid", $userid);
             $query->orWhere("project_task_visibility_users.userid", $userid);
             $query->orWhere("project_sub_task_visibility_users.userid", $userid);
-            if ($departmentView['enabled']) {
-                $query->orWhereIn('project_tasks.project_id', $departmentView['project_ids']);
-            }
         });
         // 优化子查询汇总
         $builder->leftJoinSub(function ($query) {
@@ -2048,7 +2053,7 @@ class ProjectController extends AbstractController
         $projectOwnerids = ProjectUser::whereProjectId($task->project_id)
             ->whereIn('owner', [ProjectUser::OWNER_PRIMARY, ProjectUser::OWNER_DEPUTY])
             ->pluck('userid')->map(fn($v) => (int)$v)->toArray();     // 项目负责人（含项目管理员）
-        if (!UserDepartment::isDepartmentReadonlyProject($departmentView, intval($task->project_id)) && $task->visibility != 1 && !in_array($user->userid, $projectOwnerids)) {
+        if ($task->visibility != 1 && !in_array($user->userid, $projectOwnerids)) {
             $taskUserids = ProjectTaskUser::whereTaskId($task_id)->pluck('userid')->toArray();                      //任务负责人、协助人
             $subTaskUserids = ProjectTaskUser::whereTaskPid($task_id)->pluck('userid')->toArray();                  //子任务负责人、协助人
             $visibleUserids = ProjectTaskVisibilityUser::whereTaskId($task_id)->pluck('userid')->toArray();         //可见人
diff --git a/app/Models/Project.php b/app/Models/Project.php
index b1c6fb20b..570783eb7 100644
--- a/app/Models/Project.php
+++ b/app/Models/Project.php
@@ -24,6 +24,7 @@ use Request;
  * @property int|null $archive_days 自动归档天数
  * @property string|null $ai_auto_analyze AI自动分析
  * @property string|null $task_template_share 共享模板开关
+ * @property string|null $department_owner_view 部门负责人视角可见开关
  * @property string|null $user_simple 成员总数|1,2,3
  * @property int|null $dialog_id 聊天会话ID
  * @property \Illuminate\Support\Carbon|null $archived_at 归档时间
diff --git a/app/Models/ProjectTask.php b/app/Models/ProjectTask.php
index 001274475..f12c1ef79 100644
--- a/app/Models/ProjectTask.php
+++ b/app/Models/ProjectTask.php
@@ -2278,7 +2278,8 @@ class ProjectTask extends AbstractModel
                 $builder->withTrashed();
             }
             $task = $builder->first();
-            if (!empty($task) && UserDepartment::isDepartmentReadonlyProject($departmentView, intval($task->project_id))) {
+            // 仅"全员可见"(visibility=1)的任务走负责人只读视角；指定成员可见的任务交由 userTask 按可见性校验
+            if (!empty($task) && intval($task->visibility) === 1 && UserDepartment::isDepartmentReadonlyProject($departmentView, intval($task->project_id))) {
                 if ($archived === true && $task->archived_at != null) {
                     throw new ApiException('任务已归档', ['task_id' => $task_id]);
                 }
diff --git a/app/Models/UserDepartment.php b/app/Models/UserDepartment.php
index 77f708633..6ff9d57ec 100644
--- a/app/Models/UserDepartment.php
+++ b/app/Models/UserDepartment.php
@@ -567,10 +567,17 @@ class UserDepartment extends AbstractModel
         if (empty($memberUserids)) {
             return $empty;
         }
-        $projectIds = ProjectUser::whereIn('userid', $memberUserids)
-            ->pluck('project_id')
+        // 项目可单独关闭"部门负责人视角可见"，关闭后对负责人隐藏（含项目和任务群聊）
+        $projectIds = ProjectUser::whereIn('project_users.userid', $memberUserids)
+            ->join('projects', 'projects.id', '=', 'project_users.project_id')
+            ->whereNull('projects.deleted_at')
+            ->where(function ($query) {
+                $query->where('projects.department_owner_view', '<>', 'close')
+                    ->orWhereNull('projects.department_owner_view');
+            })
+            ->distinct()
+            ->pluck('projects.id')
             ->map(fn($v) => intval($v))
-            ->unique()
             ->values()
             ->toArray();
         $ownProjectIds = ProjectUser::whereUserid($user->userid)
diff --git a/app/Models/WebSocketDialog.php b/app/Models/WebSocketDialog.php
index 1af0f0c22..554fd68e4 100644
--- a/app/Models/WebSocketDialog.php
+++ b/app/Models/WebSocketDialog.php
@@ -904,15 +904,19 @@ class WebSocketDialog extends AbstractModel
             case 'project':
             case 'task':
                 // 项目群、任务群对话校验是否在项目内
+                $taskVisibility = 1;    // 项目群不涉及任务可见性，按可见处理
                 if ($dialog->group_type === 'project') {
                     $projectId = intval(Project::whereDialogId($dialog->id)->value('id'));
                 } else {
-                    $projectId = intval(ProjectTask::whereDialogId($dialog->id)->value('project_id'));
+                    $taskRow = ProjectTask::select(['project_id', 'visibility'])->whereDialogId($dialog->id)->first();
+                    $projectId = intval($taskRow?->project_id);
+                    $taskVisibility = intval($taskRow?->visibility);
                 }
                 if ($projectId > 0 && ProjectUser::whereProjectId($projectId)->whereUserid($userid)->exists()) {
                     return $dialog;
                 }
-                if ($projectId > 0 && $checkOwner === false) {
+                // 部门负责人只读视角：项目群放行；任务群仅"全员可见"任务放行，指定成员可见任务不放行
+                if ($projectId > 0 && $checkOwner === false && ($dialog->group_type === 'project' || $taskVisibility === 1)) {
                     $departmentView = UserDepartment::ownerViewContext(User::auth(), true);
                     if (UserDepartment::isDepartmentReadonlyProject($departmentView, $projectId)) {
                         return $dialog;
diff --git a/database/migrations/2026_05_21_000001_add_department_owner_view_to_projects_table.php b/database/migrations/2026_05_21_000001_add_department_owner_view_to_projects_table.php
new file mode 100644
index 000000000..fe2babbaf
--- /dev/null
+++ b/database/migrations/2026_05_21_000001_add_department_owner_view_to_projects_table.php
@@ -0,0 +1,26 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddDepartmentOwnerViewToProjectsTable extends Migration
+{
+    public function up()
+    {
+        Schema::table('projects', function (Blueprint $table) {
+            if (!Schema::hasColumn('projects', 'department_owner_view')) {
+                $table->string('department_owner_view', 20)->default('open')->after('task_template_share')->comment('部门负责人视角可见开关');
+            }
+        });
+    }
+
+    public function down()
+    {
+        Schema::table('projects', function (Blueprint $table) {
+            if (Schema::hasColumn('projects', 'department_owner_view')) {
+                $table->dropColumn('department_owner_view');
+            }
+        });
+    }
+}
diff --git a/language/original-api.txt b/language/original-api.txt
index f87439055..211a2db20 100644
--- a/language/original-api.txt
+++ b/language/original-api.txt
@@ -994,3 +994,4 @@ LDAP 用户缺少邮箱属性，请联系管理员配置
 该用户不存在
 无权操作此模板
 修改共享模板
+修改负责人视角可见
diff --git a/language/original-web.txt b/language/original-web.txt
index 5c852cc2b..ee89ee421 100644
--- a/language/original-web.txt
+++ b/language/original-web.txt
@@ -2392,3 +2392,6 @@ AI任务分析
 开启后，添加任务时可使用其他项目共享的任务模板。
 关闭后，添加任务时仅加载本项目模板，不显示其他项目共享模板。
 根据系统设置的自动归档规则执行
+负责人视角
+开启后，部门负责人可只读查看本项目及其全员可见任务。
+关闭后，本项目及其群聊对部门负责人视角隐藏。
diff --git a/resources/assets/js/pages/manage/components/ProjectPanel.vue b/resources/assets/js/pages/manage/components/ProjectPanel.vue
index 707a91325..4ca607437 100644
--- a/resources/assets/js/pages/manage/components/ProjectPanel.vue
+++ b/resources/assets/js/pages/manage/components/ProjectPanel.vue
@@ -452,6 +452,14 @@
                     <div v-if="settingData.task_template_share === 'open'" class="form-tip">{{$L('开启后，添加任务时可使用其他项目共享的任务模板。')}}</div>
                     <div v-else class="form-tip">{{$L('关闭后，添加任务时仅加载本项目模板，不显示其他项目共享模板。')}}</div>
                 </FormItem>
+                <FormItem v-if="systemConfig.department_owner_project_view === 'open'" :label="$L('负责人视角')" prop="department_owner_view">
+                    <RadioGroup v-model="settingData.department_owner_view">
+                        <Radio label="open">{{$L('开启')}}</Radio>
+                        <Radio label="close">{{$L('关闭')}}</Radio>
+                    </RadioGroup>
+                    <div v-if="settingData.department_owner_view === 'open'" class="form-tip">{{$L('开启后，部门负责人可只读查看本项目及其全员可见任务。')}}</div>
+                    <div v-else class="form-tip">{{$L('关闭后，本项目及其群聊对部门负责人视角隐藏。')}}</div>
+                </FormItem>
             </Form>
             <div slot="footer" class="adaption">
                 <Button type="default" @click="settingShow=false">{{$L('取消')}}</Button>
@@ -1665,7 +1673,8 @@ export default {
                         archive_method: this.projectData.archive_method,
                         archive_days: this.projectData.archive_days,
                         ai_auto_analyze: this.projectData.ai_auto_analyze || 'open',
-                        task_template_share: this.projectData.task_template_share || 'open'
+                        task_template_share: this.projectData.task_template_share || 'open',
+                        department_owner_view: this.projectData.department_owner_view || 'open'
                     });
                     this.settingShow = true;
                     this.$nextTick(() => {
diff --git a/resources/assets/js/pages/manage/components/TaskDetail.vue b/resources/assets/js/pages/manage/components/TaskDetail.vue
index df8a2b0e1..c3b6c3ce8 100755
--- a/resources/assets/js/pages/manage/components/TaskDetail.vue
+++ b/resources/assets/js/pages/manage/components/TaskDetail.vue
@@ -117,7 +117,7 @@
             </div>
             <Scrollbar ref="scroller" class="scroller" :touch-content-blur="false">
                 <Alert v-if="taskDetail.department_readonly" class="task-readonly-alert" type="info" show-icon>
-                    {{$L('当前为负责人视角：你可查看任务内容、动态和附件，并参与讨论，但不能编辑任务。')}}
+                    {{$L('当前为负责人  ，并参与讨论，但不能编辑任务。')}}
                 </Alert>
                 <Alert v-if="!isDepartmentReadonly && taskDetail.task_user !== undefined && getOwner.length === 0" class="receive-box" type="warning">
                     <span class="receive-text">{{$L('该任务尚未被领取，点击这里')}}</span>