True precocious puberty has the following effects on themselves and society: 1. Due to the rapid growth of hormone levels, children with precocious puberty have a much earlier demand for the opposite sex than their peers, but their intelligence and sexual psychology are not yet mature, so they are prone to early love, early pregnancy and sexual crimes. The risk of early love, early pregnancy and early marriage increases; 2. Children may also have low self-esteem, fear and anxiety because they are different from their peers in physical size, which may affect their normal life and study. The risk of behavioral problems and quality decline increases; 3, academic performance decreases, cognitive ability and developmental level lags behind that of students in the same grade; 4, the possibility of school failure increases; 5, the opportunity to receive education decreases; 6, the fertility and stability of marriage decreases after adulthood; 7, the possibility of job success and economic income decreases after adulthood; 8, susceptible to vulvodynia, vaginitis, adnexitis, resulting in their own 9. Decrease in the degree of health; 9. Due to the early puberty of the affected children, and the intellectual and psychosexual immaturity, social problems are likely to occur and cause mental and life burdens to parents; due to the accelerated skeletal growth of the affected children, the epiphysis closes early, although temporarily higher than other children of the same age, but after adulthood is often shorter than normal. In short, precocious puberty may cause harm to oneself, family and society, and it is called a public hazard disease.