Premature physiological maturity may affect a child’s height and mental health. Girls mainly show breast development, changes in external genitalia, appearance of pubic and axillary hair, and menstruation. For boys, it is mainly manifested by increased testicular volume, penis growth, low voice, spermatorrhea and so on. 1. Affect height: physiological precocious maturation of the body’s hormone content is too high, will be prompted within a short period of time to grow taller than the average age of the child, but the child’s epiphysis will close prematurely, the height of the adult is often lower than that of the same age. 2. Impact on mental health: due to early physiological maturity, the appearance of secondary sexual characteristics too early, in front of normal peers, the premature change in body shape will have a greater psychological impact on the child, that they are different from other children. The resulting psychological burden, emotional upset, fear, low self-esteem, depression and other manifestations, easy to affect the child’s normal life and learning situation. Precocious puberty is caused by hormonal disorders in the body, and if you give your child early nutritional supplements, as well as excessive nutrition in the daily diet, etc., it is also an important cause of precocious puberty in children.