Redness of the face in the sun is usually due to the occurrence of solar dermatitis, which tends to darken in the later stages. In order to recover, general treatment, medication and physical therapy can be given. Prevention needs to do a good job of daily sunscreen, but due to personal constitution and the severity of the disease is different, there is no rapid recovery. 1. General treatment: first of all, patients need to get out of the environment of strong ultraviolet rays as soon as possible, and do a good job of cooling down cold compresses 3 to 4 hours after sun exposure to reduce skin molting and blisters. 24 hours after sun exposure to do a good job of skin hydration and moisturizing work to accelerate skin metabolism and promote skin recovery. Go out again to do a good job of sun protection, such as wearing sunscreen hats, masks, sunscreen clothing, applying sunscreen and so on. 2. Drug treatment: according to the patient’s skin lesions, the doctor can choose the topical drugs and oral medication. Topical drugs include glycerite lotion, glucocorticoid cream (mometasone furoate, hydrocortisone butyrate), boric acid solution, etc. Oral drugs include antihistamine (cetirizine), vitamin C, non-steroidal anti-inflammatory drugs (ibuprofen) and so on. 3. Physical therapy: If there is darkening after the redness subsides, it belongs to melanin deposition, and vitamin C can be taken to alleviate the hyperpigmentation. When the patient’s face after sunburn red, in order to quickly recover to prevent blackening, it is recommended to go to a regular hospital, under the guidance of a professional doctor for standardized treatment. Drugs need to be used in accordance with medical advice.