Shuowenjieziyizheng is a book which is the only remaining in-depth study material of Chosun(朝鮮) dynasty that studies Chinese characters included in Shuowenjiezi. It consists of six volumes, using the bronze inscriptions to correct the errors of shuowenjiezi, and dealing with various graphonomical topics regarding Chinese characters. It has originality which differentiates itself from the opinions of Chinese scholars. This paper introduced the unique analysis on structure of Chinese characters in Shuowenjieziyizheng, and considered its significance.