The shape of waist length and short legs is mainly due to the formation of individual growth and development characteristics, 70% of individual growth and development is due to genetic factors, that is, genes for regulation, body shape is mainly due to genetic regulation, the formation of growth and development characteristics, resulting in waist length and short legs. In addition, 30% is also caused by acquired factors, such as the usual state of nutrition, and whether or not to produce bone metabolic diseases, other systemic diseases can also have an impact on the growth and development of bone. The daily state of motor function, such as regular participation in physical exercise, may develop more balanced, and some people work with weight too early, which will cause the legs to develop shorter. So the body shape of waist length and short legs, 70% is genetically determined, 30% is determined by acquired factors. In this case, if the body is in good condition, normal work and exercise are no problem, do not focus on the body shape, mainly to see whether it can live normally.