diff --git a/calc/com/tenwa/reckon/executor/CreateTransactionExecutor.java b/calc/com/tenwa/reckon/executor/CreateTransactionExecutor.java
index dbce18404..781469e86 100644
--- a/calc/com/tenwa/reckon/executor/CreateTransactionExecutor.java
+++ b/calc/com/tenwa/reckon/executor/CreateTransactionExecutor.java
@@ -315,14 +315,7 @@ public class CreateTransactionExecutor implements Transaction {
 				BigDecimal interest =new BigDecimal(BoLRP.get(i).getAttribute("INTEREST").toString());
 				BigDecimal ratio = new BigDecimal(splittingRatio).divide(new BigDecimal("100"));
 				
-				Long planDate = BoLRP.get(i).getAttribute("PLAN_DATE").getDate().getTime();
-				//第一期的话，用计划日期减去起租日。（第一期本金加剩余总本金等于总本金）
-				if(i==0){
-					day = String.valueOf((planDate-start)/(24*60*60*1000));
-				}else{
-					day = String.valueOf((planDate-(BoLRP.get(i-1).getAttribute("PLAN_DATE").getDate().getTime()))/(24*60*60*1000));
-				}
-				corpus_sp = corpus.add(allRemainCorpus).multiply(ratio).multiply(new BigDecimal(day)).divide(new BigDecimal("360"),2,BigDecimal.ROUND_HALF_UP);
+				corpus_sp = corpus.add(allRemainCorpus).multiply(ratio).multiply(new BigDecimal("30")).divide(new BigDecimal("360"),2,BigDecimal.ROUND_HALF_UP);
 				BigDecimal interest_sp = interest.subtract(corpus_sp);
 				ps.setString(1, corpus_sp.toString());
 				ps.setString(2, interest_sp.toString());