diff --git a/src/api/trainingTask.js b/src/api/trainingTask.js
index 95b4004..fe35e08 100644
--- a/src/api/trainingTask.js
+++ b/src/api/trainingTask.js
@@ -84,3 +84,17 @@ export function saveClassTrainingTask(teachingClassId, taskKey, data) {
     data,
   });
 }
+
+export function restoreClassTrainingTaskDefault(teachingClassId, taskKey) {
+  return request({
+    url: `/api/training-tasks/classes/${teachingClassId}/${taskKey}/override`,
+    method: "delete",
+  });
+}
+
+export function restoreClassTrainingTasksDefaults(teachingClassId) {
+  return request({
+    url: `/api/training-tasks/classes/${teachingClassId}/overrides`,
+    method: "delete",
+  });
+}
diff --git a/src/views/teacherEnd/trainingTask/index.vue b/src/views/teacherEnd/trainingTask/index.vue
index df74f4f..ed902f4 100644
--- a/src/views/teacherEnd/trainingTask/index.vue
+++ b/src/views/teacherEnd/trainingTask/index.vue
@@ -25,6 +25,16 @@
           <div class="toolbar-actions">
             <el-tag v-if="selectedTeachingClass" type="success">班级配置</el-tag>
             <el-tag v-else>默认任务</el-tag>
+            <el-button
+              v-if="selectedTeachingClass"
+              type="danger"
+              plain
+              size="small"
+              :loading="restoring"
+              @click="restoreAllTasksDefaults"
+            >
+              恢复本班全部默认任务
+            </el-button>
           </div>
         </div>
       </div>
@@ -186,6 +196,15 @@
 
         <footer class="drawer-footer">
           <el-button @click="dialogVisible = false">{{ isReadonly ? "关闭" : "取消" }}</el-button>
+          <el-button
+            v-if="!isReadonly"
+            type="danger"
+            plain
+            :loading="restoring"
+            @click="restoreTaskDefault"
+          >
+            恢复此任务默认内容
+          </el-button>
           <el-button v-if="!isReadonly" type="primary" :loading="saving" @click="submitTask">保存配置</el-button>
         </footer>
       </div>
@@ -198,6 +217,8 @@ import {
   listTrainingTasks,
   listClassTrainingTasks,
   saveClassTrainingTask,
+  restoreClassTrainingTaskDefault,
+  restoreClassTrainingTasksDefaults,
   uploadTrainingTaskMaterial,
 } from "@/api/trainingTask";
 import * as indexApi from "@/api/teacher";
@@ -211,6 +232,7 @@ const keyword = ref("");
 const loading = ref(false);
 const classesLoading = ref(false);
 const saving = ref(false);
+const restoring = ref(false);
 const materialUploading = ref(false);
 const tasks = ref([]);
 const classList = ref([]);
@@ -480,6 +502,47 @@ async function submitTask() {
   }
 }
 
+async function restoreTaskDefault() {
+  if (!selectedTeachingClass.value || !taskForm.taskKey) return;
+  const confirmed = await confirmRestoreDefault("恢复此任务默认内容");
+  if (!confirmed) return;
+  restoring.value = true;
+  try {
+    await restoreClassTrainingTaskDefault(selectedTeachingClassId.value, taskForm.taskKey);
+    dialogVisible.value = false;
+    proxy?.$modal?.msgSuccess("已恢复此任务的默认内容");
+    await queryTasks();
+  } finally {
+    restoring.value = false;
+  }
+}
+
+async function restoreAllTasksDefaults() {
+  if (!selectedTeachingClass.value) return;
+  const confirmed = await confirmRestoreDefault("恢复本班全部默认任务");
+  if (!confirmed) return;
+  restoring.value = true;
+  try {
+    await restoreClassTrainingTasksDefaults(selectedTeachingClassId.value);
+    proxy?.$modal?.msgSuccess("已恢复本班全部默认任务");
+    await queryTasks();
+  } finally {
+    restoring.value = false;
+  }
+}
+
+async function confirmRestoreDefault(action) {
+  try {
+    await proxy?.$modal?.confirm(
+      `确认${action}吗？仅恢复当前教学班的实训任务内容，不影响学生已提交数据、成绩、进度及其他班级。`,
+      "确认恢复默认内容"
+    );
+    return true;
+  } catch (error) {
+    return false;
+  }
+}
+
 function buildPayload() {
   return {
     projectName: taskForm.project,
diff --git a/tests/training-task-restore.static.test.cjs b/tests/training-task-restore.static.test.cjs
new file mode 100644
index 0000000..4d1e326
--- /dev/null
+++ b/tests/training-task-restore.static.test.cjs
@@ -0,0 +1,20 @@
+const assert = require("assert");
+const fs = require("fs");
+const path = require("path");
+
+const root = path.resolve(__dirname, "..");
+const read = (file) => fs.readFileSync(path.join(root, file), "utf8");
+
+const api = read("src/api/trainingTask.js");
+const page = read("src/views/teacherEnd/trainingTask/index.vue");
+
+assert(/export function restoreClassTrainingTaskDefault/.test(api));
+assert(/export function restoreClassTrainingTasksDefaults/.test(api));
+assert(/\/classes\/\$\{teachingClassId\}\/\$\{taskKey\}\/override/.test(api));
+assert(/\/classes\/\$\{teachingClassId\}\/overrides/.test(api));
+assert(/恢复此任务默认内容/.test(page));
+assert(/恢复本班全部默认任务/.test(page));
+assert(/proxy\?\.\$modal\?\.confirm/.test(page));
+assert(/v-if="selectedTeachingClass"/.test(page));
+
+console.log("training task default restore front-end contract passed");