diff --git a/src_tenwa/com/tenwa/flow/util/CalculateUtil.java b/src_tenwa/com/tenwa/flow/util/CalculateUtil.java
new file mode 100644
index 000000000..50fc58e0a
--- /dev/null
+++ b/src_tenwa/com/tenwa/flow/util/CalculateUtil.java
@@ -0,0 +1,58 @@
+package com.tenwa.flow.util;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import com.amarsoft.app.util.ProductParamUtil;
+import com.tenwa.reckon.util.NumTools;
+import com.tenwa.reckon.util.NumberUtils;
+import com.tenwa.reckon.util.RentTools;
+
+public class CalculateUtil {
+	/**
+	 * 
+	 * @param product_id  产品编号
+	 * @param clean_lease_money  融资额
+	 * @param income_number		期数
+	 * @return rent 每月租金
+	 * @throws Exception
+	 */
+	public static String getRentByProductId(String product_id,String clean_lease_money,String income_number) throws Exception{
+		Map<String,String> map = new HashMap<String,String>();
+		//年利率
+		String retu_vale = ProductParamUtil.getProductParameterValue(product_id,"PRD0350","product_rate","ProductRate");
+		//期数
+		String rem_rent_list = income_number;
+		//融资额
+		String rem_corpus = clean_lease_money;
+		//数字 1:期初;或 0:期末
+		String period_type = ProductParamUtil.getProductParameterValue(product_id,"PRD0350","period_type","begin_end");
+		if("period_type_1".equals(period_type)){
+			period_type="1";
+		}else{
+			period_type="0";
+		}
+		//还款间隔,汽车一般都是月付，所以先按12来，以后有需求再改
+		String income_number_year = "12";
+		//未来值，默认为"0"
+		String nominalprice ="0";
+		
+		map.put("retu_vale", retu_vale);
+		map.put("rem_rent_list", rem_rent_list);
+		map.put("rem_corpus", rem_corpus);
+		map.put("period_type", period_type);
+		map.put("income_number_year", income_number_year);
+		map.put("nominalprice", nominalprice);
+		
+		String rent = RentTools.getRentByPmt(map);
+		//租金圆整
+		String rentRound = ProductParamUtil.getProductParameterValue(product_id,"PRD0323","RentRound","RentRound");
+		String rentRoundType = ProductParamUtil.getProductParameterValue(product_id,"PRD0323","RentRound","RentRoundType");
+		if(rentRound.length()>0){
+			rent=NumberUtils.rentRound(rent, rentRound,rentRoundType);
+		}else{
+			rent = NumTools.formatNumberDoubleScale(rent, 2);
+		}
+		return rent;
+	}
+}