Precocious puberty is a common developmental abnormality of the pediatric endocrine system, which refers to the abnormal development of secondary sexual characteristics in girls before the age of 8 and in boys before the age of 9. The disease is most common in children who overindulge in hormone-containing foods, nutritional supplements and drugs, and can be caused by intracranial infections, trauma or tumors. Precocious puberty has short stature, early sexual behavior, personality depression and other hazards, so it needs to be identified and treated early. The symptoms of precocious puberty are typical and can be identified by the symptoms of the child, and the diagnosis can be clarified by clinical examination. If a girl shows armpit hair, breast development, vaginal bleeding and menstruation before the age of 8, and a boy shows beard, throat knot, enlarged testicles and penis, and pubic hair before the age of 9, it can be initially considered to be suffering from precocious puberty, and the following examinations can be carried out to confirm the diagnosis: 1. 2. Ultrasound examination of the pelvis: It can determine whether there are occupational lesions in the ovaries, and also focus on the development of the ovaries and uterus in female children; 3. The treatment of precocious puberty includes treatment for the cause and medication, which is based on the specific condition of the child. 1, etiological treatment: tumor caused by surgical removal or chemotherapy, radiotherapy; congenital adrenal cortical hyperplasia using corticosteroid treatment, hypothyroidism to give thyroxine treatment; 2, drug treatment: can use gonadotropin-releasing hormone analogues to reduce the secretion of pituitary gonadotropin, so that estrogen back to pre-pubertal level. Or use high-dose sex hormones to inhibit the secretion of hypothalamic-pituitary gonadotropins. The occurrence of precocious puberty is closely related to daily life, so parents can prevent children from developing this disease through the following ways: 1. avoid children from eating food and health products containing hormones; 2. prohibit children from viewing pornographic images or publications; 3. control weight reasonably to avoid obesity; 4. parents and teachers timely conduct sex education and emotional communication with children; 5. encourage children to participate in sports activities appropriately; 6. 6.Ensure a reasonable diet and avoid overeating.