Menstruation at the age of 8 weeks may be a sign of precocious puberty. Parents should take their children to the hospital for examination in time to identify the cause of the disease, determine whether it is central precocious puberty or peripheral precocious puberty, and then choose the appropriate treatment under the guidance of the doctor, such as medication, surgery, chemotherapy, and radiation therapy, etc., and the specific situation varies from person to person. 1. Central precocious puberty: It belongs to complete precocious puberty, which is mainly caused by the premature activation of the hypothalamic-pituitary-gonadal axis function, and the child is likely to start menstruation early at the age of 8 weeks. For this problem, it can usually be improved by gonadotropin-releasing hormone drugs, such as gonadorelin for injection and leuprolide acetate for injection. 2. Peripheral precocious puberty: It is mainly caused by some kind of disease, such as primary hypothyroidism, ovarian tumor and so on. If it is caused by hypothyroidism, then it can be improved by the use of adrenocorticotropic hormone drugs, which commonly used drugs are prednisone acetate tablets, dexamethasone tablets, etc. If it is caused by ovarian tumor, then it can be improved by the use of adrenocorticotropic hormone drugs. If the precocious puberty is caused by an ovarian tumor, then the tumor needs to be removed through surgery in time. After the surgery, the doctor can consider whether chemotherapy or radiotherapy is needed according to the child’s recovery, so as to better control the development of the disease. During the treatment, the child should strictly follow the doctor’s arrangement, standardize the use of medication, maintain a light diet and try not to eat food containing hormones. If any abnormal phenomenon occurs, the medication should be stopped immediately and the doctor should be informed to avoid aggravating the condition.