diff --git a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/busi/MesCutRawErrorProofingService.java b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/busi/MesCutRawErrorProofingService.java
index 0bbf2e3..c804290 100644
--- a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/busi/MesCutRawErrorProofingService.java
+++ b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/busi/MesCutRawErrorProofingService.java
@@ -208,7 +208,7 @@ public class MesCutRawErrorProofingService implements IMesCutRawErrorProofingSer
 
         if (materialSnDb.getSurplusLength() < model.getSubLength()) MesPcnException.throwMesBusiException("条码【%s】减去长度【%s】大于剩余长度【%s】", model.getSn(), materialSnDb.getSurplusLength(), model.getSubLength());
 
-        materialSnDb.setSurplusLength(materialSnDb.getSurplusLength() - model.getSubLength());
+        materialSnDb.setSurplusLength(MathOperation.sub(materialSnDb.getSurplusLength(), model.getSubLength()));
         ConvertBean.serviceModelUpdate(materialSnDb, model.getUserName());
         materialSnRepository.save(materialSnDb);