Whether the epiphysis is closed or not cannot be measured by oneself. The epiphysis is the cartilage between the epiphysis and the metaphysis. Whether the epiphysis is closed or not is mostly judged by age and X-ray examination results. Generally, a wide translucent band can be shown in the X-ray film, which indicates that the epiphysis is not yet closed. With age, when the cartilage of the epiphysis and metaphysis completely ossify, the epiphysis of the two ends of the long bones can be seen to disappear, forming a tight seam, then it can be judged that the epiphysis is closed, so it is not possible to self-test whether the epiphysis is closed or not. The epiphysis is mainly related to the height change of adolescents, so before the epiphysis closure, the adolescent developmental group should do a diversified diet, balanced nutrition, regular life and regular living, appropriate exercise, in order to promote the healthy development of the body.