The mechanism of 2, 6-naphthalic acid by means of 1, 8-naphthalic acid transferring station synthesis is studied. The theory of catalysis via coordination is put forword, which is based of isomer balance of Naphthalic coordinate object in ternary coordination complex regarding Cadmium as centrical ion. 探讨了1,8-萘二甲酸转位合成2,6-萘二甲酸的机理,提出了以镉为中心离子的三元配合物中萘二甲酸配体的异构平衡为基础的配位催化合成理论。