Abstract: Tusi Study has emerged with the gradual integration and deepening of research on it.As a specialized study,it should be systematically constructed,focusing on the three aspects of occurrence logic,research direction and construction path based on the existent research result.While attention is paid to the systematic theory,the fragmented and over-generalized research should be avoided.Since the construction of Tusi Study is still at an exploring stage,the discussion has not come to a conclusion.Luckily,great efforts have been paid to the construction of Tusi Study,which is seen in the integration of researchers,resources and institutions.The publication of Introduction to Tusi Study in China undoubtedly is a pioneering step in constructing Tusi Study.Presently,the research direction should be concentrated on the outline of Tusi Study,compilation of Tusi dictionaries,etc.

Key words: Tusi Study, Tusi phenomena, object, category, method