中文摘要：

近代中国的综合贸易条件指数整体呈下降趋势，说明中国在对外进行商品交换过程中的相对经济利益是不断下降的。贸易条件的变动受汇率和国际价格水平的影响非常小，与国内价格水平也无明显关系。贸易条件的变动主要是由贸易结构的变化引起的，茶叶和生丝等农产品贸易的衰弱是造成贸易条件下降的主要原因。

英文摘要：

The index on comprehensive terms of trade of modem China presenting decline trend explains the economic profit of China＇s merchandise commutation outward declining continuously. The fluctuation of terms of trade is very small under the influence of rate of exchange and the international price level, and it almost is free from the influence of the local price level. The fluctuation of terms of trade mainly result fwrm the crack-up of tea and silk and other agricultural product trade.