In recent years, with the popularization of health science knowledge, more and more parents have started to pay attention to the problem of precocious puberty in children, and more and more parents and children come to the pediatric endocrine clinic for consultation and medical treatment, but we find that more girls come for consultation, and parents come to see the girls as soon as they find small lumps in their breasts or their children have breast swelling and pain. In the case of boys, parents often ignore it because of the hidden performance, and when they find that the voice has become thicker and the beard has grown, they often have already reached the middle and late stages of development, missing the best time for treatment. So how to detect precocious puberty in boys in time. The definition of precocious puberty in boys is that the testicular volume becomes larger before the age of 9 weeks, in more than 4ml, testicular volume has a special testicular ruler to measure, for parents can visually, fathers and boys can intentionally pay attention to the bath, if the child’s scrotal skin has folds, indicating the beginning of development, and if the child would have been average height, suddenly scampered, in the class stand out, but also to be alert, especially in elementary school 4-6 years If your child was sitting in the first few rows of seats and suddenly becomes taller and goes to the back of the row, you should be alert to the possibility of accelerated growth during the developmental period, so don’t just be happy at this time, but take your child to the pediatric endocrinology clinic.