If the skin is exposed to the sun's ultraviolet rays for too long, it may be sunburnt. Mild is local erythema, edema, itching, serious may also appear blisters, bullae, erosion, pain. After the skin is sunburnt, the first thing is to immediately move to a cool and dark environment. The cold wet compress can be applied locally with normal saline, boric acid solution or fresh milk as soon as possible to reduce the local symptoms of redness, swelling, itching and pain. After wet compress, some mild anti allergy ointment can be used for treatment, such as desonide cream, aloxone cream, etc. If the itching is obvious, you can also take oral anti allergic drugs, such as loratadine, ebastine, etc. for symptomatic treatment.