Coffee spot is a relatively common hyperpigmentation skin disease, the cause of the disease is still unclear, long coffee spots on the body is thought to be due to heredity. Café-au-lait spots are brown patches found at birth or shortly after birth, mostly occurring on the face and trunk, and are scattered. The patches are of different sizes and shapes, but they have clear boundaries and smooth surfaces, and can increase in size with age. At present, the clinical cause of this disease is not clear, because this disease has a certain hereditary tendency, so most cases are thought to be caused by direct or family inheritance. Most of them are seen in normal people, and their occurrence may not be related to sun exposure, and they can usually appear at birth or in infancy. Café-au-lait spots will mostly increase with age, and when the number of plaques exceeds a certain number, they will be combined with neurofibromatosis. Café au lait can also be a sign of multi-systemic diseases, such as tuberous sclerosis and ataxia telangiectasia. Café-au-lait spots generally do not need special treatment, if it affects the appearance, you can choose laser treatment, but there will be the possibility of recurrence; caused by other diseases of café-au-lait spots to the cause of the treatment. Patients who are willing to be treated are advised to go to regular hospitals in time.