The duality between the generalized Leontief transformation and joint profit functions with markup equation were developed to test the market structure of Taiwan-Japan trade.

• 然而台湾在对大部分国家处于顺差地位的同时,对日却产生持续贸易逆差,而且逆差金额日益扩大,不断引发两国经贸关系的摩擦。