diff --git a/src/com/engine/salary/biz/SpecialAddDeductionBiz.java b/src/com/engine/salary/biz/SpecialAddDeductionBiz.java
index 7fc30292e..b18a80be4 100644
--- a/src/com/engine/salary/biz/SpecialAddDeductionBiz.java
+++ b/src/com/engine/salary/biz/SpecialAddDeductionBiz.java
@@ -90,7 +90,7 @@ public class SpecialAddDeductionBiz extends BaseBean {
         try {
             SpecialAddDeductionMapper mapper = sqlSession.getMapper(SpecialAddDeductionMapper.class);
             encryptUtil.encryptList(param, SpecialAddDeductionPO.class);
-            List<List<SpecialAddDeductionPO>> partition = Lists.partition(param, 100);
+            List<List<SpecialAddDeductionPO>> partition = Lists.partition(param, 50);
             partition.forEach(mapper::updateBatchSelective);
             sqlSession.commit();
         } finally {