Precocious puberty in girls generally refers to precocious puberty in girls, which is a kind of abnormal growth and development, such as improper diet, pituitary gland disease, gonadal disease, etc. Prompt examination to make a diagnosis should be targeted treatment according to the specific situation. 1. If it is suspected that a girl’s precocious puberty is caused by eating an excessive amount of harmful food or drugs, etc., she should stop eating immediately and seek medical attention. 2. Hypothalamus and pituitary diseases: hypothalamus and pituitary gland are the highest level centers of human hormones, controlling the secretion of systemic diseases. Hypothalamus and pituitary diseases are mostly the culprits of precocious puberty, and MRI of pituitary gland should be carried out in time in order to make clear diagnosis and then treatment. 3. Adrenal diseases: adrenal cortex is also an important place for the secretion of sex hormones, adrenal cortical hyperplasia and functional adenomas may be the cause of precocious puberty, and they should be treated surgically if necessary. 4. Gonadal diseases, mainly ovarian diseases: hormone measurement and imaging examination of uterine adnexa should be carried out in time to find out the cause and then treat the cause of the disease. Girls’ precocious puberty manifests itself in the development of breasts, the first menstruation, the growth of pubic hair or armpit hair and other secondary sexual characteristics before the age of 8. They should consult a doctor in time to find out the cause of the disease, and according to the cause of the disease, carry out targeted treatment.