Swollen face after sunburn can be categorized into sunburn, light drug rash, light contact dermatitis, plant-sunburn dermatitis, mud snail-sunburn dermatitis, etc., and the method of reducing swelling can be divided into general treatment, topical treatment and systemic treatment. 1. General treatment: Firstly, we should clarify the cause of post-sunburn face swelling, whether it is related to the food and medication taken recently, or whether there is a change of new skincare products and fragrances, etc., and get rid of the above triggers in time. Secondly, avoid sun exposure again, and do a good job of protection when you go out. 2. Topical treatment: patients with mild swelling can choose water cold wet compresses, slightly heavier swelling can be used topical glucocorticosteroid preparations, vesicles oozing cold wet compresses of 3% boric acid solution can be chosen. 3. Systemic treatment: mild patients can take oral antihistamines, vitamin B, vitamin C, the more serious condition should be timely oral glucocorticoids. Heavier patients should go to the regular hospital in time, under the guidance of the doctor to use drugs.