diff --git a/pages/submit-task/index.vue b/pages/submit-task/index.vue
index 306b020..2a345ec 100644
--- a/pages/submit-task/index.vue
+++ b/pages/submit-task/index.vue
@@ -13,7 +13,7 @@
       <view class="form-item">
         <view class="form-icon"></view>
         <textarea 
-          v-model="formData.description" 
+          v-model="formData.description"
           class="description-input" 
           placeholder="输入提交说明" 
           placeholder-style="color: #999;"
@@ -112,7 +112,7 @@
         :disabled="!canSubmit"
         @click="handleSubmit"
       >
-        确认提交
+        {{ isEditMode ? '确认更新' : '确认提交' }}
       </uv-button>
     </view>
   </view>
@@ -132,6 +132,10 @@ const formData = ref({
 
 // 任务ID
 const taskId = ref(null);
+// 编辑模式标识
+const isEditMode = ref(false);
+const editRecordIndex = ref(-1);
+const editRecordData = ref(null);
 
 // 进度选择弹窗
 const showProgressPicker = ref(false);
@@ -156,6 +160,42 @@ const canSubmit = computed(() => {
 // 页面加载
 onLoad((options) => {
   taskId.value = options.taskId || options.id;
+  
+  // 检查是否是编辑模式
+  if (options.mode === 'edit' || options.recordIndex !== undefined) {
+    isEditMode.value = true;
+    editRecordIndex.value = parseInt(options.recordIndex || -1);
+    
+    // 从存储中获取编辑数据
+    const editData = uni.getStorageSync('editSubmitRecord');
+    if (editData && editData.record) {
+      editRecordData.value = editData.record;
+      
+      // 预填充表单数据
+      formData.value.description = editData.record.content || '';
+      formData.value.progress = editData.record.progress !== null && editData.record.progress !== undefined 
+        ? editData.record.progress 
+        : null;
+      
+      // 处理附件
+      if (editData.record.attachments && editData.record.attachments.length > 0) {
+        editData.record.attachments.forEach(attachment => {
+          if (attachment.type === 'image' && attachment.path) {
+            formData.value.images.push(attachment.path);
+          } else if (attachment.type === 'file') {
+            formData.value.files.push({
+              name: attachment.name || '文件',
+              path: attachment.path || '',
+              size: attachment.size || 0
+            });
+          }
+        });
+      }
+      
+      // 清除存储的编辑数据
+      uni.removeStorageSync('editSubmitRecord');
+    }
+  }
 });
 
 // 取消
@@ -374,7 +414,7 @@ const handleSubmit = () => {
   }
 
   uni.showLoading({
-    title: '提交中...'
+    title: isEditMode.value ? '更新中...' : '提交中...'
   });
 
   // 准备提交数据
@@ -393,8 +433,8 @@ const handleSubmit = () => {
   // TODO: 调用提交接口
   // 实际使用时，应该调用API接口上传数据
   // uni.request({
-  //   url: '/api/task/submit',
-  //   method: 'POST',
+  //   url: isEditMode.value ? '/api/task/submit/update' : '/api/task/submit',
+  //   method: isEditMode.value ? 'PUT' : 'POST',
   //   data: submitData,
   //   success: (res) => {
   //     // 处理成功响应
@@ -408,27 +448,54 @@ const handleSubmit = () => {
   setTimeout(() => {
     uni.hideLoading();
     
-    // 提交成功后，将数据传递回任务详情页
-    const submitRecord = {
-      userName: '当前用户', // TODO: 从用户信息获取
-      time: formatTimeToChinese(new Date()),
-      content: submitData.description || '',
-      progress: submitData.progress,
-      attachments: [
-        ...submitData.images.map(img => ({ type: 'image', path: img })),
-        ...submitData.files.map(file => ({ type: 'file', name: file.name, path: file.path }))
-      ],
-      canEdit: true,
-      showDelayBtn: false
-    };
+    if (isEditMode.value) {
+      // 编辑模式：更新现有记录
+      const updatedRecord = {
+        userName: editRecordData.value?.userName || '当前用户', // 保持原用户名
+        time: formatTimeToChinese(new Date()), // 更新时间
+        content: submitData.description || '',
+        progress: submitData.progress,
+        attachments: [
+          ...submitData.images.map(img => ({ type: 'image', path: img })),
+          ...submitData.files.map(file => ({ type: 'file', name: file.name, path: file.path }))
+        ],
+        canEdit: true, // 保持可编辑权限
+        showDelayBtn: editRecordData.value?.showDelayBtn || false
+      };
 
-    // 将提交记录存储到本地，供任务详情页使用
-    uni.setStorageSync('newSubmitRecord', submitRecord);
+      // 将更新的记录存储到本地，供任务详情页使用
+      uni.setStorageSync('updatedSubmitRecord', {
+        recordIndex: editRecordIndex.value,
+        record: updatedRecord
+      });
 
-    uni.showToast({
-      title: '提交成功',
-      icon: 'success'
-    });
+      uni.showToast({
+        title: '更新成功',
+        icon: 'success'
+      });
+    } else {
+      // 新建模式：添加新记录
+      const submitRecord = {
+        userName: '当前用户', // TODO: 从用户信息获取
+        time: formatTimeToChinese(new Date()),
+        content: submitData.description || '',
+        progress: submitData.progress,
+        attachments: [
+          ...submitData.images.map(img => ({ type: 'image', path: img })),
+          ...submitData.files.map(file => ({ type: 'file', name: file.name, path: file.path }))
+        ],
+        canEdit: true,
+        showDelayBtn: false
+      };
+
+      // 将提交记录存储到本地，供任务详情页使用
+      uni.setStorageSync('newSubmitRecord', submitRecord);
+
+      uni.showToast({
+        title: '提交成功',
+        icon: 'success'
+      });
+    }
 
     // 延迟返回，让用户看到成功提示
     setTimeout(() => {
diff --git a/pages/task-detail/index.vue b/pages/task-detail/index.vue
index 44b4509..9c74f80 100644
--- a/pages/task-detail/index.vue
+++ b/pages/task-detail/index.vue
@@ -225,10 +225,28 @@ const closeMenu = () => {
 
 // 编辑记录
 const editRecord = (index) => {
-  uni.showToast({
-    title: '编辑记录',
-    icon: 'none'
+  const record = task.value.submitRecords[index];
+  if (!record) {
+    uni.showToast({
+      title: '记录不存在',
+      icon: 'none'
+    });
+    showMenuIndex.value = -1;
+    return;
+  }
+
+  // 将编辑数据存储到本地，供提交任务页面使用
+  uni.setStorageSync('editSubmitRecord', {
+    recordIndex: index,
+    record: record,
+    taskId: task.value.id
   });
+
+  // 跳转到提交任务页面
+  uni.navigateTo({
+    url: `/pages/submit-task/index?taskId=${task.value.id}&mode=edit&recordIndex=${index}`
+  });
+
   showMenuIndex.value = -1;
 };
 
@@ -353,8 +371,9 @@ onLoad((options) => {
   }
 });
 
-// 页面显示时检查是否有新的提交记录
+// 页面显示时检查是否有新的提交记录或更新的记录
 onShow(() => {
+  // 检查是否有新的提交记录
   const newSubmitRecord = uni.getStorageSync('newSubmitRecord');
   if (newSubmitRecord) {
     // 将新提交记录添加到列表开头
@@ -364,6 +383,20 @@ onShow(() => {
     // 清除存储的记录
     uni.removeStorageSync('newSubmitRecord');
   }
+
+  // 检查是否有更新的提交记录（编辑后的记录）
+  const updatedSubmitRecord = uni.getStorageSync('updatedSubmitRecord');
+  if (updatedSubmitRecord) {
+    const { recordIndex, record } = updatedSubmitRecord;
+    if (recordIndex !== undefined && recordIndex >= 0 && recordIndex < task.value.submitRecords.length) {
+      // 更新指定索引的记录
+      task.value.submitRecords[recordIndex] = record;
+      // 切换到提交记录标签页
+      activeTab.value = 'records';
+    }
+    // 清除存储的记录
+    uni.removeStorageSync('updatedSubmitRecord');
+  }
 });
 </script>