Black pigmentation around the lips may be caused by post-inflammatory hyperpigmentation, external stimulation, or melanosis. It can be improved by topical medication and medical beauty with the advice of a doctor. 1. Post-inflammatory hyperpigmentation: If the local skin lesions have occurred before, the post-inflammatory hyperpigmentation may be left behind. It is recommended to pay attention to the local sunscreen moisturizing, if necessary, under the guidance of the doctor to give hydroquinone cream or transmino acid essence of topical application, can help to lighten the pigmentation. 2. The role of external forces: frequent touching and stimulation of the local area may lead to pigmentation. It is recommended to pay strict attention to sun protection to avoid further aggravation of pigmentation, which can slowly fade with the passage of time. If it can not fade for a long time, it can also be treated by fruit acid peeling, laser skin treatment. 3. Melanosis: Melanosis, also known as occupational melanosis, is a pigment metabolism disorder mainly characterized by skin pigmentation. It is recommended to reduce occupational exposure, strengthen protection, and apply topical zinc oxide oil and hydroquinone cream for treatment when necessary. Melanosis around the lips treatment methods are more, it is recommended to combine their own situation, and the doctor’s advice for treatment.