Precocious puberty can be seen in pediatric endocrinology, child health clinic or child growth and development clinic. Precocious puberty is a common pediatric endocrine disease. Precocious puberty refers to the change of secondary sexual characteristics in girls before the age of 8 weeks or boys before the age of 9-9.5 years, that is, the appearance of breast nodules in girls and testicular enlargement in boys. Children with precocious puberty may be taller and grow faster and larger than children of the same age and gender, but due to premature sexual development, a large amount of estrogen also stimulates the premature fusion of the epiphysis, resulting in a phenomenon in which the child actually grows early but is shorter than normal in the future. At the same time, premature sexual development can lead to problems in psychological development, so early intervention is needed once precocious sexual development occurs.