中文摘要：

本文以改革开放30年来的人民币汇率与出口换汇成本为研究对象,从贸易收支中的汇率政策选择、汇率与出口换汇成本实证两个方面进行分析。分析表明,人民币汇率与出口换汇成本之间关系密切,如果两者的差异太大,就会造成贸易收支的顺差或者逆差。

英文摘要：

The article takes exchange rate of RMB and its exchange cost in 30 years since reform as the object. It is revealed that there is a long-term steady correlation between the currency exchange cost and the exchange rate. The value of currency exchange cost would not deviate from that of exchange rate for long, or it will cause a longterm surplus or deficit in international trade.