diff --git a/src_tenwa/quartz/ContractInfoForOverdue.java b/src_tenwa/quartz/ContractInfoForOverdue.java
index 0b5e94e3f..739475d40 100644
--- a/src_tenwa/quartz/ContractInfoForOverdue.java
+++ b/src_tenwa/quartz/ContractInfoForOverdue.java
@@ -51,21 +51,22 @@ public class ContractInfoForOverdue implements Job{
 	 * @param arg0
 	 */
 	private void contractNormal(JBOTransaction tx, JobExecutionContext arg0) {
-		String sql = "SELECT O.contract_number,O.over_days,lci.id FROM business_status O LEFT JOIN lb_contract_info lci ON lci.contract_number = O.contract_number WHERE (O.over_days IS NOT NULL OR O.over_days = '') AND DATE_FORMAT(O.inputtime, '%Y-%m-%d') = DATE_SUB(CURDATE(), INTERVAL 1 DAY)";
+		String sql = "SELECT O.contract_number,O.over_days,lci.id FROM business_status O LEFT JOIN lb_contract_info lci ON lci.contract_number = O.contract_number WHERE O.over_days IS NOT NULL AND O.over_days != '' AND DATE_FORMAT(O.inputtime, '%Y-%m-%d') = DATE_SUB(CURDATE(), INTERVAL 1 DAY)";
 		String contractNumber = "";
 		String contractId = "";
 		try {
-			//查询合同状态表中前一天的逾期合同
+			//查询合同状态表中昨天的逾期合同
 			List<Map<String, String>> list = DataOperatorUtil.getDataBySql(tx, sql, null);
 			if(list.size()>0){
 				//循环遍历每一条逾期的合同
 				for (Map<String, String> map : list) {
 					contractNumber = map.get("contract_number");
 					contractId = map.get("id");
+					//查询今天是否逾期，如果未逾期则插入合同正常
 					BizObject obj = JBOFactory.createBizObjectQuery(VI_CONTRACT_OVERDUE.CLASS_NAME, "contract_number=:contract_number").setParameter("contract_number", contractNumber).getSingleResult(false);
 					if(obj == null){//昨天逾期，今天未逾期，证明合同正常
 						
-						//防止重复插入数据
+						//防止在当天执行多次定时任务重复插入数据
 						String sql1 = "SELECT business_status,contract_number,inputtime FROM business_status WHERE business_status='64' AND contract_number='"+contractNumber+"' AND LEFT(inputtime,10)=DATE_FORMAT(SYSDATE(), '%Y/%m/%d')";
 						List<Map<String, String>> list2 = DataOperatorUtil.getDataBySql(tx, sql1, null);
 						if(list2.size()==0){