Skin darkening after sunburn can be improved through daily care, medication, medical treatment and other ways to improve the symptoms. 1. Daily care: good sun protection measures, such as going out to play umbrellas, sun hats, etc.; can be used to replenish water, moisturizing function of the skin care products, avoid the use of irritating skin care products and cosmetics; appropriate to eat more fresh fruits and vegetables, in order to replenish vitamins; to ensure enough sleep, avoid staying up late, and participate in physical exercise to promote metabolism, which will help the melanin subside. 2. Medication: Vitamin E milk, recombinant human epidermal growth factor gel and other drugs can be used for local application to promote skin repair. 3. Medical treatment: If the skin condition does not improve for a long time, you can consider photorejuvenation, picosecond laser and other medical treatments to help expel melanin from the body and restore normal skin color. It is recommended that patients whose skin becomes dark after sunburn, when the symptoms are serious or after a period of time of daily skin care, the effect is not obvious, timely medical treatment, under the guidance of the doctor to choose the best treatment program, to avoid self-medication, so as not to delay the condition.