Precocious puberty is the appearance of secondary sexual characteristics, i.e. breast development, appearance of pubic and axillary hair, rapid growth in height and weight and development of external genitalia, before the age of sexual development. The incidence of precocious puberty in adolescents is about 0.6%, with more girls than boys. In the process of sexual development, both boys and girls are related to rapid growth of height and weight and accelerated skeletal maturation. Due to the rapid growth of bones, epiphyses may fuse earlier, and early height is higher than that of children of the same age, but the height in adulthood is shorter. Precocious puberty can be treated, and the younger the age at which treatment begins, the less growth potential is lost. Foods that can cause precocious puberty in young children include: 1. tonic foods, such as cordyceps, ginseng, ginseng, astragalus, etc.; 2. poultry raised with rapid growth agents; 3. anti-seasonal vegetables and fruits; 4. fried foods and oral liquids that claim to make children “taller and stronger”, etc. Parents should pay attention to scientific child rearing, avoid or minimize the food that causes precocious puberty to young children.