Development is the development of the phenomenon of life, the process of the organism from the beginning of life to the development of maturity. Development is a phenomenon of life development, is the organism from the beginning of life until the development of maturity of the process of change, but also the biological organism self-organization and self-construction process; the human body’s period of development is called puberty, is the individual from the child into an adult transition period. The growth and development of the human body will be affected by genetics, mental factors, nutritional status, sleep, exercise, disease, environment and climate. Maintaining a good mood, exercising appropriately and getting enough sleep can help promote development. If abnormal development occurs, it is recommended to go to the hospital in time.