| This paper is aimed at studying on the lexical reserch methods in Tongya to demonstrate it′s value on lexicology. We believe that Tongya had breakthroughs both on induction and deduction during the lexical reserch. Tongya had extended the limit of literature materials, explored the value of spoken language materials, and paid much attention on life experience when using the induction methods. On the other hand, through the use of deduction, Tongya was very careful on the process of argumentation, and the theories it based on ware reliable, so it could bring some valuable results. |