本文从三国这样的大分裂时期边疆与内地王朝之关系的角度探讨中国的统一问题．其中结合南中大姓夷帅的反蜀活动以及蜀汉在南中的统治及其影响分析了边疆民族所存在的“国家认同感”，这种“国家认同感”便是维系中国统一的重要纽带．进而得出“统一”是中国历史发展的必然趋势这一根本结论。 This article explores the issue of the unification of China from the perspective of the relations between the big separatist period such as the Three Kingdoms and the dynasties in the Mainland. The analysis of the “national identity” of frontier ethnic groups combined with the reign of Shu in the south and the Shuhan rule in the south and its influence are the important links that maintain the reunification of China. Then it comes to the conclusion that “unification” is an inevitable trend of historical development in China.