Melanin spots on the face are caused by freckles, chloasma, post-inflammatory hyperpigmentation and so on, which can be solved by sun protection, laser surgery, medication and other methods. 1. Freckles: direct exposure to light will cause skin melanization and freckles, at this time, it is necessary to pay attention to sun protection, reduce the contact of strong sunlight, and at the same time, use the laser method for treatment. 2. Chloasma: Chloasma is related to heredity, sun exposure, estrogen level, etc. It can be treated with decolorizing agents such as hydroquinone externally and photoelectricity therapy at the same time. 3. Post-inflammatory hyperpigmentation: it is the mark left after the healing of many kinds of inflammatory skin diseases, which can be treated with hydroquinone cream, and if it continues to be unrelieved, it can also be removed by using laser therapy and other means. Patients with melanin spots on the face need to consult a doctor in time, under the guidance of the doctor to carry out appropriate treatment to improve the situation of spots.