Mosquito bites can be divided into three steps to deal with the itch relief after cleaning, applying medication, and seeking medical attention. 1. Clean: all kinds of mosquito bites do not appear after the wound, you can local topical eau de toilette to stop itching; if there is a wound, you can first choose to use soap and water, soda and other alkaline substances to smear or rinse. 2. Apply medicine: the first thing you can do is to apply a cold compress, you can use a cool towel to apply a cold compress to the red and swollen parts, you can also use 3% boric acid solution to apply wet compresses, and apply glycerite lotion to stop the itching; or you can use local topical glucocorticoid creams such as Dinocryl ointment, tretinoin cream, etc. to reduce inflammation and stop the itching. 3. Seek medical advice: If the symptoms are more serious or the inflammation range is relatively large, after the above two steps of treatment is still not recovered, you need to go to the hospital, under the guidance of the doctor oral medication, commonly used antihistamines, such as cetirizine, orotidine hydrochloride tablets, etc.; but also short-term oral glucocorticosteroids, such as prednisone. Serious discomfort after being bitten by mosquitoes, please go to the hospital in a timely manner to avoid delayed treatment.