diff --git a/bms-back/bms-system/src/main/java/com/bms/ar/service/impl/ArBillServiceImpl.java b/bms-back/bms-system/src/main/java/com/bms/ar/service/impl/ArBillServiceImpl.java
index 38dd8b1b..dfb9b71f 100644
--- a/bms-back/bms-system/src/main/java/com/bms/ar/service/impl/ArBillServiceImpl.java
+++ b/bms-back/bms-system/src/main/java/com/bms/ar/service/impl/ArBillServiceImpl.java
@@ -976,7 +976,7 @@ public class ArBillServiceImpl implements IArBillService {
             throw failure(arBillId, ArLogObjectType.EXPORT, String.valueOf(arBillId), ArLogOperationType.EXPORT,
                     bill.getStatus(), "未配置启用中的应收账单默认导出模板", operator, requestId);
         }
-        String fileName = bill.getBillNo() + "_" + safeFilePart(bill.getCustomerName()) + "_"
+        String fileName = safeFilePart(bill.getCustomerCode()) + "_" + safeFilePart(bill.getCustomerName()) + "_"
                 + new SimpleDateFormat("yyyyMM").format(bill.getBillPeriodEnd()) + ".xlsx";
         ArBillExport export = new ArBillExport();
         export.setArBillId(arBillId);