Hyperpigmentation after skin inflammation can be improved through general treatment, medication and physical therapy. 1. General treatment: patients need to adjust their lifestyles, pay attention to skin care, and need to do a good job of sun protection on daily trips to prevent symptoms from worsening. 2. Medication: It is recommended that patients follow the doctor’s instructions to use niacinamide, azelaic acid and other drugs to inhibit the proliferation of melanocytes; or topical hydroquinone, arbutin deoxygenation, etc. to inhibit the formation of melanin; or topical retinoic acid drugs, which can promote the renewal of the epidermal cells. 3. Physical therapy: photorejuvenation, dye laser and excimer laser can reduce post-inflammatory skin pigmentation through photothermal effect. There are many ways to treat post-inflammatory hyperpigmentation of the skin, and it is recommended that patients go to regular hospitals, cooperate with the doctor to carry out standardized treatment, and avoid blindly using medication on their own.