With the deepening of overseas Chinese studies research, more and more works have been published on the nature of the discipline, research core and theory, and methods in multi-regional Chinese studies. At present, there are three trends in the theoretical exploration of Chinese studies: First, the expansion of the field. The research radius of Chinese studies should expand from local and regional knowledge to global knowledge. Second, break the limitation of one-way thinking. Based on China, look at the world, and take care of China from the world, and correct the limitations of thinking from a one-way perspective. Third, the return of the dominance of the discourse system of “inclusive, inclusive and mutually inclusive”.