Precocious puberty can be diagnosed in girls with breast development before the age of 8 years, and it is necessary to further clarify which of the following categories is diagnosed: 1) true precocious puberty (central precocious puberty); 2) pseudo precocious puberty (peripheral precocious puberty); 3) simple precocious breast development. The causes and hazards of precocious puberty vary from category to category, and so do the treatment methods. The information you provided is limited, so I am sorry that I cannot give you a definite answer. The diagnosis of precocious puberty needs to be made by a professional doctor, and if necessary, relevant examinations can be performed to clarify. If it is true precocious puberty, we need to know more about its causes and hazards. First of all, MRI of saddle area should be taken to exclude intracranial tumor or other lesions. If it is idiopathic central precocious puberty, the danger is that the gonadal axis starts prematurely, so that the gonads (ovaries of girls) develop to promote the appearance of secondary sexual characteristics (breasts, pubic hair, menarche, axillary hair) and eventually have fertility, and then the height growth ends, similar to the normal pubertal development, except that the time is significantly earlier. Therefore, children with precocious puberty may: 1. have premature involvement of sex hormones, with advanced bone age and tall stature at a young age, and eventually have a significantly shorter adult height due to the shortened growth period; 2. have prematurely reached a higher level of sex hormones, which will cause psychological changes in children, “rumination” and behavioral problems, similar to the psychological changes of adolescents during puberty, and due to the imperfect development of various other body 3. If no intervention is made, the child may experience the first menstruation after a period of time, which is impossible for young children to cope with. In girls with idiopathic precocious puberty with an onset of less than 6 years of age, the use of gonadotropin analogs injected every 4 weeks can interrupt the premature initiation of the gonadal axis, restore prepubertal growth and development, and solve many of the above problems. The course of treatment is usually 2 years or more, and the final course depends on the parents’ height requirements, acceptable timing of menarche, and acceptable timing of secondary sex characteristics development in consultation with the attending physician.