diff --git a/src/pages/Container/EduTraining/ClassManage/Add/index.js b/src/pages/Container/EduTraining/ClassManage/Add/index.js
index b856c03..17a9813 100644
--- a/src/pages/Container/EduTraining/ClassManage/Add/index.js
+++ b/src/pages/Container/EduTraining/ClassManage/Add/index.js
@@ -94,12 +94,14 @@ function ClassAddPage(props) {
     const handleSubmit = async () => {
         try {
             const values = await form.validateFields();
-            // 培训日期范围拆为后端 startDate/endDate（yyyy-MM-dd）
+            // 培训日期范围拆为后端 startDate/endDate；结束时间为当天最大值（与延期一致）
             const { trainingDateRange, ...rest } = values;
             const payload = {
                 ...rest,
                 startDate: trainingDateRange?.[0]?.format("YYYY-MM-DD"),
-                endDate: trainingDateRange?.[1]?.format("YYYY-MM-DD"),
+                endDate: trainingDateRange?.[1]
+                    ?.endOf("day")
+                    .format("YYYY-MM-DD HH:mm:ss"),
                 ...(isEdit ? { id: router.query.classId } : {}),
             };
             const res = await (isEdit