中文摘要：

文章运用DFS理论模型,论证了不管是产业间贸易还是产业内贸易,当本国出现技术进步、劳动生产率相对提高时,本国出口的产品种数增加,本国将获得更多的贸易利益;外国仅仅在一定条件下能够获得贸易利益,且在一定条件下,甚至可能出现贸易损害。当外国劳动生产率相对提高时,则外国出口的产品种数增加,并获得更多的贸易利益。

英文摘要：

Using the DFS model, this paper demonstrates the following conclusions. No matter inter - industry trade, or intra - industry trade, when technological progress occurs, country relative labor productivity increases and their number of export products will increase. Furthermore, country will re-ceive more trade interests. At the same time, foreign will receive more trade interests only under cer-tain conditions, when foreign labor productivity increases, then foreign number of export products in- crease, and foreign will receive more trade interests.