Girls start to develop at the age of 8, need to be highly alert to the possibility of precocious puberty, it is recommended to go to the hospital children’s health department in time to improve the skull MRI, sex hormone complete set of tests and other tests to clarify the diagnosis, if necessary, can be followed by the doctor to be the general treatment and medication, surgical treatment, and so on. 1. General treatment: usually should be light diet, avoid early use of cosmetics. 2. Define the cause: if the baby has precocious puberty, it is necessary to define the cause of the disease, you can improve the cranial MRI, sex hormone complete set, thyroid hormone complete set and other clear diagnosis, if the hypothyroidism caused by precocious puberty, you can comply with the doctor’s advice to supplement the levothyroxine sodium tablets for treatment, such as the existence of hypothalamus cysts and other precocious puberty caused by the doctor’s advice to carry on the interventional surgery for treatment. Clinically, there are many reasons why an eight-year-old girl starts to develop, if the girl starts to develop at the age of eight, you need to be alert to the possibility of precocious puberty, you can under the guidance of the doctor, improve the relevant examination, a clear diagnosis, and then take the appropriate measures to deal with.