diff --git a/web/frontend/src/pages/LoginTasksPage.tsx b/web/frontend/src/pages/LoginTasksPage.tsx
index 5bbe43c..a33c7f9 100644
--- a/web/frontend/src/pages/LoginTasksPage.tsx
+++ b/web/frontend/src/pages/LoginTasksPage.tsx
@@ -217,15 +217,12 @@ export default function LoginTasksPage() {
       });
       setTasks(data.items);
       setTaskTotal(data.total);
-      // 翻页/筛选后清掉失效的勾选，避免「选中了看不见的行」。
-      const visible = new Set(data.items.map((t) => t.id));
-      setSelectedRowKeys((prev) => (selectedAllMatching ? prev : prev.filter((k) => visible.has(k))));
     } catch {
       // 忽略轮询失败，下一次定时刷新会继续尝试。
     } finally {
       tasksLoadingRef.current = false;
     }
-  }, [batchId, taskPage, taskPageSize, taskStatus, selectedAllMatching]);
+  }, [batchId, taskPage, taskPageSize, taskStatus]);
 
   const hasActiveTasks = useMemo(
     () => tasks.some((task) => ['pending', 'running'].includes(task.status)),
@@ -700,6 +697,8 @@ export default function LoginTasksPage() {
             sticky
             rowSelection={{
               selectedRowKeys,
+              // 跨页保留勾选：翻页时不清空，否则用户「选了 10 个翻页就没了」。
+              preserveSelectedRowKeys: true,
               onChange: (keys) => {
                 setSelectedRowKeys(keys as number[]);
                 setSelectedAllMatching(false);