diff --git a/inspect-main/inspect-main-task/src/main/java/com/inspect/task/controller/PatrolTaskController.java b/inspect-main/inspect-main-task/src/main/java/com/inspect/task/controller/PatrolTaskController.java
index 4510c22..193993d 100644
--- a/inspect-main/inspect-main-task/src/main/java/com/inspect/task/controller/PatrolTaskController.java
+++ b/inspect-main/inspect-main-task/src/main/java/com/inspect/task/controller/PatrolTaskController.java
@@ -54,6 +54,8 @@ import org.apache.poi.ss.usermodel.*;
 import org.apache.poi.xssf.streaming.SXSSFSheet;
 import org.apache.poi.xssf.streaming.SXSSFWorkbook;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
@@ -2684,6 +2686,9 @@ public class PatrolTaskController extends BaseController {
     private void exportExcelV2(HttpServletResponse response, List<PatrolData> dataList) throws Exception {
         response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
         response.setHeader("Content-Disposition", "attachment; filename=\"task_export_" + System.currentTimeMillis() + ".xlsx\"");
+        response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
+        response.setHeader("Pragma", "no-cache");
+        response.setHeader("Expires", "0");
         logger.info("[EXCEL]开始导出");
         printMemoryInfo("开始导出");
 
@@ -2733,17 +2738,15 @@ public class PatrolTaskController extends BaseController {
                 pathMap = null;
             }
 
+            response.setHeader("Transfer-Encoding", "chunked");
             workbook.write(out);
-            // 清理临时文件
-            workbook.dispose();
-            printMemoryInfo("结束导出");
         } catch (IOException e) {
             logger.error("导出异常：{}", e);
             printMemoryInfo("导出异常");
         } finally {
             Path start = Paths.get(TEMP_DIR);
             Files.walk(start)
-                    .filter(Files::isRegularFile)
+                    .sorted(Comparator.reverseOrder())
                     .forEach(path -> {
                         try {
                             Files.deleteIfExists(path);