From the perspective of academic origins, mutual-discipline, necessity and possibility, etc., this paper analyzes the disciplinary history of anthropology as the sister discipline with ethnology and sociology. In the process of sinicization, anthropology has the mutually-disciplinary characteristics with ethnology and sociology. The developmental reality is that anthropology has already become a mature discipline. The Chinese anthropology has met both the subjective and the objective requirements for building it into a first-level discipline.