Dark lips and hyperpigmentation may be caused by heredity, bad habits, or pathological factors. It is recommended to make a clear diagnosis and give topical ointments, medications, and also physical therapy, which can help improve the symptoms. 1. Heredity: Parents or grandparents in the family with dark lips and hyperpigmentation, and their children may also have these conditions, considering that it is related to heredity. If you feel that it affects your aesthetics, you can go to the hospital for treatment with intense pulsed light and pulsed pigment cosmetic laser treatment, which can remove pigment particles from the skin. 2. Bad habits: lip biting, light exposure and other long-term adverse stimuli may lead to pigmentation. Azelaic acid, arbutin and other drugs can be given in combination with doctor’s advice, which can inhibit melanin cell synthesis of melanin. However, it needs to be treated under the guidance of a doctor. 3. Pathological factors: black lips, melanin precipitation, but also to understand whether it is related to pathological factors, such as local allergic lipitis, cardiopulmonary diseases leading to hypoxia. It is recommended to go to the hospital for treatment of the primary disease. It is recommended that patients with black lips go to the hospital for examination, and it is recommended that treatment be carried out for the results of the examination, combined with the doctor’s advice.