diff --git a/src/__tests__/api/studySessions.spec.ts b/src/__tests__/api/studySessions.spec.ts
index bef77d5..7a92e8e 100644
--- a/src/__tests__/api/studySessions.spec.ts
+++ b/src/__tests__/api/studySessions.spec.ts
@@ -14,6 +14,7 @@ import {
   continueSession,
   pauseSession,
   endSession,
+  abortSession,
   startOrContinueStudySession,
   getSessionDetail,
 } from '@/api/studySessions'
@@ -69,6 +70,14 @@ describe('studySessions API', () => {
       { content: '自定义结束' }
     )
   })
+  it('abortSession sends POST with confirmation phrase', async () => {
+    mockedRequest.post.mockResolvedValue({ code: 200, data: null })
+    await abortSession('S001', '我误操作导致开启了本次学习')
+    expect(mockedRequest.post).toHaveBeenCalledWith(
+      '/study-sessions/S001/study-sessions/abort',
+      { confirmation: '我误操作导致开启了本次学习' }
+    )
+  })
 
   it('startOrContinueStudySession sends GET to correct endpoint', async () => {
     mockedRequest.get.mockResolvedValue({ code: 200, data: { sessionNum: 'S002' } })
diff --git a/src/__tests__/components/StartTask.spec.ts b/src/__tests__/components/StartTask.spec.ts
index 855da16..a78055a 100644
--- a/src/__tests__/components/StartTask.spec.ts
+++ b/src/__tests__/components/StartTask.spec.ts
@@ -6,6 +6,7 @@ import { createMemoryHistory, createRouter } from 'vue-router'
 import StartTask from '@/components/StartTask.vue'
 import router from '@/router'
 import {
+  abortSession,
   continueSession,
   endSession,
   getActiveSession,
@@ -17,6 +18,7 @@ import {
 import { getFragmentsBySession } from '@/api/reportFragments'
 
 vi.mock('@/api/studySessions', () => ({
+  abortSession: vi.fn(),
   continueSession: vi.fn(),
   endSession: vi.fn(),
   getActiveSession: vi.fn(),
@@ -222,4 +224,44 @@ describe('StartTask.vue', () => {
     expect(pauseSession).toHaveBeenCalledTimes(2)
     wrapper.unmount()
   })
+
+  it('confirmAbort aborts session with correct phrase and navigates to study page', async () => {
+    vi.mocked(abortSession).mockResolvedValue({ code: 200, message: '请求成功' } as any)
+    const wrapper = await mountTask()
+
+    wrapper.vm.abortConfirmation = '我误操作导致开启了本次学习'
+    await wrapper.vm.confirmAbort()
+
+    expect(abortSession).toHaveBeenCalledWith('SESSION_001', '我误操作导致开启了本次学习')
+    expect(ElMessage.success).toHaveBeenCalledWith('本次学习已关闭，未产生任何数据')
+    expect(localStorage.getItem('activeSession')).toBeNull()
+    expect(router.currentRoute.value.path).toBe('/study')
+    wrapper.unmount()
+  })
+
+  it('confirmAbort refuses wrong phrase without calling API', async () => {
+    const wrapper = await mountTask()
+
+    wrapper.vm.abortConfirmation = '不是确认语'
+    await wrapper.vm.confirmAbort()
+
+    expect(ElMessage.warning).toHaveBeenCalledWith('确认语输入不正确，请重新输入')
+    expect(abortSession).not.toHaveBeenCalled()
+    wrapper.unmount()
+  })
+
+  it('confirmAbort shows backend message when session has fragments and stays on page', async () => {
+    vi.mocked(abortSession).mockRejectedValue({
+      code: 400,
+      message: '这次学习已经产生了学习残片，不能按误操作结束了哦',
+    } as any)
+    const wrapper = await mountTask()
+
+    wrapper.vm.abortConfirmation = '我误操作导致开启了本次学习'
+    await wrapper.vm.confirmAbort()
+
+    expect(ElMessage.error).toHaveBeenCalledWith('这次学习已经产生了学习残片，不能按误操作结束了哦')
+    expect(router.currentRoute.value.path).not.toBe('/study')
+    wrapper.unmount()
+  })
 })
diff --git a/src/api/studySessions.ts b/src/api/studySessions.ts
index 981a3a8..dfddbb6 100644
--- a/src/api/studySessions.ts
+++ b/src/api/studySessions.ts
@@ -14,6 +14,11 @@ export const endSession = (sessionNum: string, content: string = "任务结束")
     return request.post(`/study-sessions/${sessionNum}/study-sessions/ended`, { content });
 };
 
+/** 误操作结束学习会话：需输入确认语，严格零数据关闭（删除会话与预期） */
+export const abortSession = (sessionNum: string, confirmation: string) => {
+    return request.post(`/study-sessions/${sessionNum}/study-sessions/abort`, { confirmation });
+};
+
 export const startOrContinueStudySession = (taskNum: string) => {
     return request.get(`/tasks/${taskNum}/study-sessions/start-or-continue`);
 };
diff --git a/src/components/StartTask.vue b/src/components/StartTask.vue
index 99985d1..e4ec0e7 100644
--- a/src/components/StartTask.vue
+++ b/src/components/StartTask.vue
@@ -5,6 +5,7 @@ import { ElMessage, ElMessageBox } from "element-plus";
 import request from "@/utils/request";
 import { useTimer } from "@/components/composables/useTimer";
 import {
+  abortSession,
   continueSession,
   endSession,
   getActiveSession,
@@ -31,6 +32,14 @@ const {
 const pageLoading = ref(true);
 const timerActionLoading = ref(false);
 const endingSession = ref(false);
+// 误操作结束（零数据关闭）
+const MISOPERATION_PHRASE = "我误操作导致开启了本次学习";
+const abortDialogVisible = ref(false);
+const abortConfirmation = ref("");
+const abortingSession = ref(false);
+const canAbortSession = computed(
+  () => taskInfo.value.sessionState !== "ENDED" && fragmentsList.value.length === 0,
+);
 
 const summaryDialogVisible = ref(false);
 const summaryContent = ref("");
@@ -432,6 +441,41 @@ const closeSummaryDialog = () => {
   summaryDialogVisible.value = false;
   if (summaryLoadingTimer) { clearInterval(summaryLoadingTimer); summaryLoadingTimer = null; }
 };
+const openAbortDialog = () => {
+  abortConfirmation.value = "";
+  abortDialogVisible.value = true;
+};
+
+const closeExpectationAndOpenAbort = () => {
+  expectationDialogVisible.value = false;
+  openAbortDialog();
+};
+
+const confirmAbort = async () => {
+  if (abortConfirmation.value.trim() !== MISOPERATION_PHRASE) {
+    ElMessage.warning("确认语输入不正确，请重新输入");
+    return;
+  }
+  if (abortingSession.value) return;
+  abortingSession.value = true;
+  try {
+    const res = await abortSession(taskInfo.value.sessionNum, abortConfirmation.value.trim());
+    if (res.code === 200) {
+      ElMessage.success("本次学习已关闭，未产生任何数据");
+      clear();
+      clearBreakState();
+      localStorage.removeItem("activeSession");
+      await router.push("/study");
+    } else {
+      ElMessage.error(res.message || "误操作结束失败");
+    }
+  } catch (e: any) {
+    ElMessage.error(e?.message || "误操作结束失败，请重试");
+  }
+  finally {
+    abortingSession.value = false;
+  }
+};
 
 const restTimer = async () => {
   await stopTimer();
@@ -649,6 +693,9 @@ defineExpose({
   startTimer,
   stopTimer,
   endTimer,
+  openAbortDialog,
+  confirmAbort,
+  abortConfirmation,
   syncDisplay,
   clear,
 });
@@ -766,6 +813,7 @@ defineExpose({
             <el-button v-if="timerIsOver" plain type="success" @click="restTimer" :loading="timerActionLoading">休息</el-button>
           </template>
           <el-button type="danger" plain @click="openSummaryDialog">结束会话</el-button>
+          <el-button v-if="canAbortSession" text type="danger" @click="openAbortDialog">误操作结束</el-button>
         </div>
       </article>
     </div>
@@ -866,6 +914,7 @@ defineExpose({
       :rows="4"
     />
     <template #footer>
+      <el-button v-if="!expectationSaved" text type="danger" @click="closeExpectationAndOpenAbort">误操作结束</el-button>
       <el-button v-if="expectationSaved" @click="expectationDialogVisible = false">取消</el-button>
       <el-button type="success" :loading="savingExpectation" @click="saveExpectation">确定</el-button>
     </template>
@@ -909,6 +958,32 @@ defineExpose({
       <el-button type="success" :loading="endingSession" @click="endTimer(summaryContent)">确认结束</el-button>
     </template>
   </el-dialog>
+
+  <el-dialog
+    v-model="abortDialogVisible"
+    title="误操作结束"
+    width="520px"
+    :close-on-click-modal="false"
+    :close-on-press-escape="false"
+  >
+    <p class="dialog-hint">本次学习会话尚未产生学习残片，可以零数据关闭。关闭后会话与学习预期将被删除，不会留下任何学习记录。</p>
+    <p class="dialog-hint">如果是误操作开启了本次学习，请输入以下内容以确认：</p>
+    <div class="abort-phrase">{{ MISOPERATION_PHRASE }}</div>
+    <el-input
+      v-model="abortConfirmation"
+      placeholder="请输入上方确认语"
+      @keyup.enter="confirmAbort"
+    />
+    <template #footer>
+      <el-button @click="abortDialogVisible = false">取消</el-button>
+      <el-button
+        type="danger"
+        :loading="abortingSession"
+        :disabled="abortConfirmation.trim() !== MISOPERATION_PHRASE"
+        @click="confirmAbort"
+      >确认误操作结束</el-button>
+    </template>
+  </el-dialog>
   </div>
 </template>
 
@@ -1298,4 +1373,15 @@ defineExpose({
   text-overflow: ellipsis;
 }
 
+.abort-phrase {
+  margin-bottom: 12px;
+  padding: 8px 12px;
+  border: 1px dashed var(--el-color-danger);
+  border-radius: 6px;
+  color: var(--el-color-danger);
+  font-size: 14px;
+  text-align: center;
+  word-break: break-all;
+}
+
 </style>