Abstract: By way of literature review, experiment, statistics methods and comparative analysis, the present paper, based on the data obtained from investigation of constitution and health state of minority youth and children in Xinjiang from 1985 and 2014, made dynamic observation, comparison analysis of body figure of Uyghur, Kazak and Kirgiz youth and children over 30 years.The results show that: during the period from 1985 to 2014, the growth level of minority youth and children aged 7 to 18 in Xinjiang has improved. The long-term growth trend of height, weight and bust remained the same as before; There were some differences in developmental level and growth rate among Uyghur, Kazak and Kirgiz youth and children. Among them, the developmental level of body figure of Kazak male and female youth and children was significantly better than that of Uyghur and Kirgiz male and female youth and children, and the difference was statistically significant; The peak age of sudden height, weight and bust increase for Uyghur, Kazak and Kirgiz youth and children was advanced, and both body solidarity and uniformity have improved.

Key words: Xinjiang, minority ethnic people, student, body figure, 1985-2014