diff --git a/api/task.js b/api/task.js
index 02ee05f..c4320ba 100644
--- a/api/task.js
+++ b/api/task.js
@@ -81,3 +81,20 @@ export const submitTask = ({ id, submitAttaches, submitRemark }) => {
   });
 };
 
+/**
+ * 申请任务延期（发起审核）
+ * @param {Object} payload 请求数据
+ * @param {string|number} payload.bstId 任务ID
+ * @param {string} payload.bstType 审核类型
+ * @param {string} payload.createRemark 申请说明
+ * @param {string} payload.data 业务数据JSON字符串
+ * @returns {Promise} 返回接口响应
+ */
+export const applyTaskDelay = (payload) => {
+  return uni.$uv.http.post('/bst/verify', payload, {
+    custom: {
+      auth: true
+    }
+  });
+};
+
diff --git a/pages/task/apply-delay/index.vue b/pages/task/apply-delay/index.vue
index 1527e08..783fd83 100644
--- a/pages/task/apply-delay/index.vue
+++ b/pages/task/apply-delay/index.vue
@@ -111,8 +111,9 @@
 </template>
 
 <script setup>
-import { ref, computed, onMounted } from 'vue';
+import { ref, computed } from 'vue';
 import { onLoad } from '@dcloudio/uni-app';
+import { applyTaskDelay } from '@/api';
 
 // 表单数据
 const formData = ref({
@@ -281,6 +282,15 @@ const selectedTime = computed(() => {
   return formData.value.selectedTime;
 });
 
+// 组合延期时间（YYYY-MM-DD HH:mm:ss）
+const buildExpireDateTime = () => {
+  if (!formData.value.selectedDate) return '';
+  const rawTime = formData.value.selectedTime || '00:00';
+  const hasSeconds = /^\d{2}:\d{2}:\d{2}$/.test(rawTime);
+  const timeSegment = hasSeconds ? rawTime : `${rawTime}:00`;
+  return `${formData.value.selectedDate} ${timeSegment}`;
+};
+
 // 打开时间选择器
 const openTimePicker = () => {
   const timeParts = formData.value.selectedTime.split(':');
@@ -331,7 +341,7 @@ const handleCancel = () => {
 };
 
 // 提交申请
-const handleSubmit = () => {
+const handleSubmit = async () => {
   if (!canSubmit.value) {
     uni.showToast({
       title: '请填写申请说明',
@@ -340,54 +350,58 @@ const handleSubmit = () => {
     return;
   }
 
+  if (!taskId.value) {
+    uni.showToast({
+      title: '缺少任务ID',
+      icon: 'none'
+    });
+    return;
+  }
+
+  const expireDateTime = buildExpireDateTime();
+  const payload = {
+    bstId: taskId.value,
+    bstType: 'UPDATE_TASK',
+    createRemark: formData.value.description.trim(),
+    data: JSON.stringify({
+      expireTime: expireDateTime
+    })
+  };
+
   uni.showLoading({
     title: '提交中...'
   });
 
-  // 准备提交数据
-  const submitData = {
-    taskId: taskId.value,
-    description: formData.value.description.trim(),
-    delayDate: formData.value.selectedDate,
-    delayTime: formData.value.selectedTime
-  };
+  try {
+    await applyTaskDelay(payload);
 
-  // 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/delay/apply',
-  //   method: 'POST',
-  //   data: submitData,
-  //   success: (res) => {
-  //     // 处理成功响应
-  //   },
-  //   fail: (err) => {
-  //     // 处理错误
-  //   }
-  // });
-
-  // 模拟提交请求
-  setTimeout(() => {
-    uni.hideLoading();
-    
     // 将延期申请数据存储到本地，供任务详情页使用
     uni.setStorageSync('delayApplication', {
       taskId: taskId.value,
-      description: submitData.description,
-      delayDate: submitData.delayDate,
-      delayTime: submitData.delayTime
+      description: payload.createRemark,
+      delayDate: formData.value.selectedDate,
+      delayTime: formData.value.selectedTime,
+      expireTime: expireDateTime
     });
 
+    uni.hideLoading();
     uni.showToast({
       title: '申请提交成功',
       icon: 'success'
     });
 
-    // 延迟返回，让用户看到成功提示
     setTimeout(() => {
       uni.navigateBack();
     }, 1500);
-  }, 1000);
+  } catch (error) {
+    uni.hideLoading();
+    console.error('申请延期失败:', error);
+    const message = error?.data?.message || error?.errMsg || '申请失败，请稍后再试';
+    uni.showToast({
+      title: message,
+      icon: 'none'
+    });
+  }
 };
 </script>