The specific hazards of precocious puberty in boys are as follows: 1. The impact on the growth and development of children is mainly on their height. Due to the problem of early sex hormone level, children will show significantly higher than children of the same age, which parents will ignore, and due to premature epiphyseal fusion, it may lead to the lifelong short height of children in adulthood, and children will be significantly lower than children of the same age in adulthood. 2. Due to the problem of sex hormone level, children’s mental development is immature, and they will have low self-esteem, fear and restlessness due to their abnormal performance, and their learning and life The ability of self-care and cognitive ability will be affected. Therefore, once a boy has precocious puberty, he needs to go to the hospital for examination to clarify the cause of precocious puberty and actively give treatment to avoid missing the best time for height treatment and to avoid excessive impact on the child’s psychological behavior.