Hyperpigmentation is a common concern for many physicians and patients, and a common concern for so many cosmetic surgeons. Most of the post-inflammatory hyperpigmentation is due to the fact that the patient has an innate pigmented body, and in the presence of damage, the melanin-producing complexase activity is activated, producing an increase in local melanin. Treatment: 1, attention to sun protection and moisturizing is important. 2.In the early stage of skin damage, use pigment-reducing drugs, such as Xylitol cream, tranexamic acid, hydroquinone cream, glutathione topical application and so on. After pigmentation, fractional laser or Q laser can be used to remove pigmentation, fruit acid peeling treatment to reduce pigmentation, tranexamic acid dressing or serum, levothyroxine, astaxanthin rubbing, oral vitamin C, E, glutathione and other drugs in the process of skin repair. Of course, if the use of depigmentation drugs, to be able to fade faster, if not treated, is generally 3 months to six months time will also slowly fade.