diff --git a/src/__tests__/components/StartTask.spec.ts b/src/__tests__/components/StartTask.spec.ts
index fb93cf3..855da16 100644
--- a/src/__tests__/components/StartTask.spec.ts
+++ b/src/__tests__/components/StartTask.spec.ts
@@ -8,6 +8,7 @@ import router from '@/router'
 import {
   continueSession,
   endSession,
+  getActiveSession,
   getExpectation,
   getSessionDetail,
   pauseSession,
@@ -18,6 +19,7 @@ import { getFragmentsBySession } from '@/api/reportFragments'
 vi.mock('@/api/studySessions', () => ({
   continueSession: vi.fn(),
   endSession: vi.fn(),
+  getActiveSession: vi.fn(),
   getExpectation: vi.fn(),
   getReportDraft: vi.fn(),
   getSessionDetail: vi.fn(),
@@ -78,6 +80,7 @@ describe('StartTask.vue', () => {
   beforeEach(async () => {
     vi.clearAllMocks()
     localStorage.clear()
+    vi.mocked(getActiveSession).mockResolvedValue({ code: 200, data: null } as any)
     vi.mocked(startOrContinueStudySession).mockResolvedValue({ code: 200, data: defaultSessionData } as any)
     vi.mocked(getExpectation).mockResolvedValue({ code: 200, data: { description: '本次学习预期' } } as any)
     vi.mocked(getFragmentsBySession).mockResolvedValue({ code: 200, data: [] } as any)
@@ -142,6 +145,19 @@ describe('StartTask.vue', () => {
     wrapper.unmount()
   })
 
+  it('redirects to another active task when one exists', async () => {
+    vi.mocked(getActiveSession).mockResolvedValue({
+      code: 200,
+      data: { taskNum: 'T002', taskName: '其他任务', sessionNum: 'S002' },
+    } as any)
+    const wrapper = await mountTask()
+    await flushPromises()
+
+    expect(startOrContinueStudySession).not.toHaveBeenCalled()
+    expect(router.currentRoute.value.path).toBe('/start-task/T002')
+    wrapper.unmount()
+  })
+
   it('endTimer refuses empty content without calling API', async () => {
     const wrapper = await mountTask()
 
diff --git a/src/components/StartTask.vue b/src/components/StartTask.vue
index 8bcea24..af5d3b5 100644
--- a/src/components/StartTask.vue
+++ b/src/components/StartTask.vue
@@ -7,6 +7,7 @@ import { useTimer } from "@/components/composables/useTimer";
 import {
   continueSession,
   endSession,
+  getActiveSession,
   getSessionDetail,
   pauseSession,
   startOrContinueStudySession,
@@ -26,6 +27,8 @@ const {
   confirmGenerateFragment,
 } = useStudyFragment();
 
+const pageLoading = ref(true);
+
 const summaryDialogVisible = ref(false);
 const summaryContent = ref("");
 const summaryPreview = ref(false);
@@ -434,6 +437,27 @@ const restTimer = async () => {
 
 const loadTaskSession = async () => {
   try {
+    const activeRes = await getActiveSession();
+    const active = activeRes?.data;
+    if (active?.taskNum && active.taskNum !== taskNum) {
+      let goToActive = false;
+      try {
+        await ElMessageBox.confirm(
+          `你还有一个未完成的学习任务「${active.taskName}」（${active.sessionNum}），是否前往继续？`,
+          "有其他任务正在进行",
+          { confirmButtonText: "前往继续", cancelButtonText: "取消", type: "warning" },
+        );
+        goToActive = true;
+      } catch {
+        // 用户取消，不开始当前任务
+      }
+      if (goToActive) {
+        router.push(`/start-task/${encodeURIComponent(active.taskNum)}`);
+      } else {
+        ElMessage.warning("请先完成进行中的任务后再开始");
+      }
+      return;
+    }
     const res = await startOrContinueStudySession(taskNum);
     Object.assign(taskInfo.value, res.data);
     await loadExpectation();
@@ -519,12 +543,16 @@ const saveExpectation = async () => {
 };
 
 const initPage = async () => {
-  const hasPermission = await checkAudioPermission();
-  if (!hasPermission) {
-    const activated = await requestAudioPermission();
-    if (!activated) return;
+  try {
+    const hasPermission = await checkAudioPermission();
+    if (!hasPermission) {
+      const activated = await requestAudioPermission();
+      if (!activated) return;
+    }
+    await loadTaskSession();
+  } finally {
+    pageLoading.value = false;
   }
-  await loadTaskSession();
 };
 
 // 碎片列表
@@ -609,7 +637,7 @@ defineExpose({
 
 <template>
   <div>
-  <section class="start-page">
+  <section class="start-page" v-loading="pageLoading">
     <el-alert
       v-if="showResumeHint"
       title="已恢复上次的学习会话，继续学习吧"
diff --git a/src/components/Study.vue b/src/components/Study.vue
index e378cc4..9d6ce3d 100644
--- a/src/components/Study.vue
+++ b/src/components/Study.vue
@@ -4,7 +4,6 @@ import request from "@/utils/request";
 import router from "@/router";
 import { ElMessage, ElMessageBox } from "element-plus";
 import { getReviewTaskStatsByTask } from "@/api/review";
-import { getActiveSession } from "@/api/studySessions";
 import { renderMarkdown } from "@/utils/markdown";
 import { applicationStatusOptions } from "@/utils/taskApplication";
 
@@ -179,30 +178,12 @@ const handlePageChange = (page: number) => {
   fetchTasks(page);
 };
 
-const startTask = async () => {
+const startTask = () => {
   if (!selectedTask.value) {
     ElMessage.warning("请先选择一个任务");
     return;
   }
-  const taskNum = selectedTask.value.taskNum;
-  try {
-    const res = await getActiveSession(taskNum);
-    if (res?.code === 200 && res.data) {
-      // 有其他任务的活跃会话
-      const active = res.data;
-      ElMessageBox.confirm(
-        `你还有一个未完成的学习任务「${active.taskName}」（${active.sessionNum}），是否前往继续？`,
-        "有其他任务正在进行",
-        { confirmButtonText: "前往继续", cancelButtonText: "取消", type: "warning" }
-      ).then(() => {
-        router.push(`/start-task/${encodeURIComponent(active.taskNum)}`);
-      }).catch(() => {});
-      return;
-    }
-  } catch {
-    // 查询失败不阻塞，直接跳转
-  }
-  router.push(`/start-task/${encodeURIComponent(taskNum)}`);
+  router.push(`/start-task/${encodeURIComponent(selectedTask.value.taskNum)}`);
 };
 
 const addTask = () => {