Redness and itchiness of the skin after sunburn is usually the occurrence of solar dermatitis, the affected skin manifests as redness, swelling, burning, pain, and even blistering, flaking and other symptoms, and some patients also have headache, fever, nausea, vomiting and other systemic symptoms. Patients can carry out the following treatment to relieve: 1, sun protection: promptly out of the light environment, avoid sun exposure again; 2, topical drugs: generally can be used topical furnace glycolic lotion and glucocorticoids, serious cases can be used boric acid solution wet compress, but avoid large wet compress; 3, oral medication: anti-histamine drugs have anti-allergic effect, can reduce the inflammatory reaction, common are loratadine, cetirizine, etc.. Patients may experience dizziness, headache, drowsiness, etc. It is recommended to avoid driving and working at height during medication. Patients can use vitamin C and vitamin B together to help skin repair. Patients should avoid scratching with their hands after sunburn to avoid skin breakage and aggravation of symptoms. Wear long sleeves and long pants when going out, and wear a sun hat or umbrella, or apply sunscreen. If the symptoms do not subside or if the skin becomes broken or infected, the patient should go to a hospital dermatologist for treatment.