Objective  To explore the common features of Chinese ethnic groups.  Methods   Eight body indexes of 62 ethnic groups in China were analyzed.  Results   The cluster analysis showed that 52 males and 59 females ethnic groups were grouped into the mixed group dominated by the northern ethnic group and the mixed group dominated by the southern ethnic group. Eight Han ethnic groups were grouped into each group, but no Han group was aggregated. The result  of body index classification showed that the main body types of Chinese male population were long trunk, middle chest, wide shoulder, wide pelvis and middle leg. Middle body, wide chest, wide shoulder, wide pelvis and middle leg were the main body types of Chinese female population. This showed that the characteristics of Chinese ethnic groups had obvious consistency. The consistency of Chinese group features was related to its close origin. It should be said that Han nationality played an important role in the process of communication and integration of various ethnic groups in China. In the history of the Han nationality, there had been many large-scale population migration. The southern movement of the northern ethnic minorities into the northern Han and the southward movement of the northern Han into the south promoted the formation of the Southern Han, which made the southern Han and the northern Han had similar body features, and also promoted the southern ethnic minorities into the southern Han. In addition, the Han nationality who moved into minority areas also gradually integrated into minority areas. Conclusion   There are obvious commonalities in Chinese ethnic groups.