diff --git a/backend/app/services/task_service.py b/backend/app/services/task_service.py
index 63a612a..813f087 100644
--- a/backend/app/services/task_service.py
+++ b/backend/app/services/task_service.py
@@ -238,12 +238,16 @@ async def receive_task(
     """
     task = await _get_task_or_404(db, task_id)
 
+    # 权限校验：只有负责人本人可接收
+    if operator_id and task.assignee_id and operator_id != task.assignee_id:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail=f"您无权操作此任务，当前任务负责人为 {task.assignee_id}",
+        )
+
     # 校验：只有 PENDING 状态可接收
     if task.status != TASK_STATUS_PENDING:
         raise HTTPException(
-            status_code=status.HTTP_400_BAD_REQUEST,
-            detail=f"只有待接收(PENDING)状态的任务可接收，当前状态: {task.status}",
-        )
 
     now = get_beijing_time()
     task.status = TASK_STATUS_WIP
@@ -284,6 +288,13 @@ async def reject_task(
     """
     task = await _get_task_or_404(db, task_id)
 
+    # 权限校验：只有负责人本人可驳回
+    if operator_id and task.assignee_id and operator_id != task.assignee_id:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail=f"您无权操作此任务，当前任务负责人为 {task.assignee_id}",
+        )
+
     # 校验：不能重复驳回已完成/已驳回的任务
     if task.status in (TASK_STATUS_COMPLETED, TASK_STATUS_REJECTED):
         raise HTTPException(
diff --git a/track-uniapp/src/pages/scan/detail.vue b/track-uniapp/src/pages/scan/detail.vue
index 164e6fb..1eb99e9 100644
--- a/track-uniapp/src/pages/scan/detail.vue
+++ b/track-uniapp/src/pages/scan/detail.vue
@@ -90,21 +90,21 @@
       <!-- ================================================================ -->
       <!-- 底部操作栏（钉死，不随滚动） -->
       <!-- ================================================================ -->
-      <view v-if="activeTask" class="footer-actions">
-        <button v-if="activeTask.status === 'WIP'" class="footer-btn footer-transfer"
-          @tap="handleTaskAction({ task: activeTask, type: 'transfer' })">
+      <view v-if="myActiveTask" class="footer-actions">
+        <button v-if="myActiveTask.status === 'WIP'" class="footer-btn footer-transfer"
+          @tap="handleTaskAction({ task: myActiveTask, type: 'transfer' })">
           🔄 完工转交
         </button>
-        <button v-if="activeTask.status === 'WIP'" class="footer-btn footer-record"
-          @tap="handleTaskAction({ task: activeTask, type: 'record' })">
+        <button v-if="myActiveTask.status === 'WIP'" class="footer-btn footer-record"
+          @tap="handleTaskAction({ task: myActiveTask, type: 'record' })">
           📝 记录/拍照
         </button>
-        <button v-if="activeTask.status === 'PENDING'" class="footer-btn footer-receive"
-          @tap="handleTaskAction({ task: activeTask, type: 'receive' })">
+        <button v-if="myActiveTask.status === 'PENDING'" class="footer-btn footer-receive"
+          @tap="handleTaskAction({ task: myActiveTask, type: 'receive' })">
           ✅ 接收任务
         </button>
-        <button v-if="activeTask.status === 'PENDING'" class="footer-btn footer-reject"
-          @tap="handleTaskAction({ task: activeTask, type: 'reject' })">
+        <button v-if="myActiveTask.status === 'PENDING'" class="footer-btn footer-reject"
+          @tap="handleTaskAction({ task: myActiveTask, type: 'reject' })">
           ❌ 驳回任务
         </button>
       </view>
@@ -379,7 +379,7 @@ export default {
       });
     },
     activeTask() {
-      // 查找树中第一个 WIP 或 PENDING 任务作为底部 Footer 的操作目标
+      // 查找树中第一个 WIP 或 PENDING 任务（不限归属）
       const findActive = (tasks) => {
         if (!tasks) return null;
         for (const t of tasks) {
@@ -393,6 +393,24 @@ export default {
       };
       return this.product ? findActive(this.product.task_tree) : null;
     },
+    myActiveTask() {
+      // 只返回当前登录人自己的 WIP/PENDING 任务
+      const findMine = (tasks) => {
+        if (!tasks) return null;
+        for (const t of tasks) {
+          const isMine = t.status === 'WIP' || t.status === 'PENDING';
+          const matchId = t.assignee_id == this.currentUserId;
+          const matchName = t.assignee_id == this.currentUsername;
+          if (isMine && (matchId || matchName)) return t;
+          if (t.child_tasks && t.child_tasks.length) {
+            const found = findMine(t.child_tasks);
+            if (found) return found;
+          }
+        }
+        return null;
+      };
+      return this.product ? findMine(this.product.task_tree) : null;
+    },
   },
   onLoad(options) {
     this.loadUsers();
@@ -516,7 +534,8 @@ export default {
         // 场景B: 立即接收
         if (this.firstForm.autoReceive) {
           try {
-            await post(`/tasks/${task.id}/receive`);
+            const opId = this.currentUsername || this.currentUserId;
+            await post(`/tasks/${task.id}/receive?operator_id=${encodeURIComponent(opId)}`);
           } catch { /* receive 失败不影响流程 */ }
         }
         uni.showToast({
@@ -696,7 +715,8 @@ export default {
       this.actionLoading = true;
       try {
         const remark = this.receiveRemark.trim() || undefined;
-        await post(`/tasks/${this.actionPopup.task.id}/receive`, { remark });
+        const opId = this.currentUsername || this.currentUserId;
+        await post(`/tasks/${this.actionPopup.task.id}/receive?operator_id=${encodeURIComponent(opId)}`, { remark });
         uni.showToast({ title: "已接收", icon: "success" });
         this.closeActionPopup();
         this.doQuery(this.product.serial_number);
@@ -705,7 +725,8 @@ export default {
     async doReject() {
       this.actionLoading = true;
       try {
-        await post(`/tasks/${this.actionPopup.task.id}/reject`, { reason: this.rejectReason.trim() });
+        const opId = this.currentUsername || this.currentUserId;
+        await post(`/tasks/${this.actionPopup.task.id}/reject?operator_id=${encodeURIComponent(opId)}`, { reason: this.rejectReason.trim() });
         uni.showToast({ title: "已驳回，返工任务已创建", icon: "success" });
         this.closeActionPopup();
         this.doQuery(this.product.serial_number);
diff --git a/track-uniapp/src/utils/request.js b/track-uniapp/src/utils/request.js
index d3acb94..941886d 100644
--- a/track-uniapp/src/utils/request.js
+++ b/track-uniapp/src/utils/request.js
@@ -30,6 +30,9 @@ export default function request(options) {
           uni.showToast({ title: "登录已过期，请重新登录", icon: "none" });
           setTimeout(() => uni.reLaunch({ url: "/pages/login/login" }), 1000);
           reject(res);
+        } else if (code === 403) {
+          uni.showToast({ title: res.data?.detail || "无权操作", icon: "none", duration: 3000 });
+          reject(res);
         } else if (code === 400) {
           uni.showToast({ title: res.data?.detail || "请求参数有误", icon: "none", duration: 2500 });
           reject(res);