diff --git a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/controller/AppBackApplyController.java b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/controller/AppBackApplyController.java
index 40b2b78..af6f931 100644
--- a/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/controller/AppBackApplyController.java
+++ b/sgzb-modules/sgzb-material/src/main/java/com/bonus/sgzb/app/controller/AppBackApplyController.java
@@ -225,7 +225,7 @@ public class AppBackApplyController extends BaseController {
             }
             backApplyService.updateBackInfo(record.getParentId(),record.getCompanyId());
             for (BackApplyInfo backApplyInfo : record.getBackApplyDetails()) {
-                backApplyInfo.setParentId(record.getParentId());
+                backApplyInfo.setParentId(record.getPreNum());
                 backApplyInfo.setAuditNum(record.getBackNum());
                 boolean re = backApplyService.upload(backApplyInfo) > 0;
                 if (!re) {