diff --git a/dxhy-erp/src/main/java/com/dxhy/erp/controller/SDNYMainProcessController.java b/dxhy-erp/src/main/java/com/dxhy/erp/controller/SDNYMainProcessController.java
index 08c8ac8c..8ddcb536 100644
--- a/dxhy-erp/src/main/java/com/dxhy/erp/controller/SDNYMainProcessController.java
+++ b/dxhy-erp/src/main/java/com/dxhy/erp/controller/SDNYMainProcessController.java
@@ -827,7 +827,7 @@ public class SDNYMainProcessController extends AbstractController {
                     }
                     if ("0".equals(taxRate) || "*".equals(taxRate) || "**".equals(taxRate) || "***".equals(taxRate) || "不征税".equals(taxRate) || "免税".equals(taxRate)) {
                         sapInvoiceDetail.setZTAX("0.00");
-                        sapInvoiceDetail.setZSM(sapInvoiceDetail.getZTAX());
+                        sapInvoiceDetail.setZSM(getZSM(sapInvoiceDetail.getZTAX()));
                     } else {
                         BigDecimal tax = new BigDecimal(taxRate);
                         sapInvoiceDetail.setZSM(getZSM(tax.toString()));