Insect bite allergy should be treated with soap and water cleaning, topical medication and oral medication. 1. Soap and water washing: insect bite allergy is an allergic reaction to insect venom in the body after being bitten by insects, you can use soap and water or water to wash the local area, try to wash out the venom and reduce the allergic reaction. 2. Local medication: If the itching is not particularly serious, you can apply glycerine lotion, and severe cases need to be treated with glucocorticoid drugs, such as tretinoin and dexamethasone, which can play an anti-inflammatory and anti-itching role. 3. Oral medication: for patients with more serious symptoms, oral cetirizine, ebastine and other drugs to shorten the course of the disease and improve the efficacy of the treatment, if the scratching secondary bacterial infection, the need for oral antibiotics, such as cefaclor, amoxicillin, oral glucocorticosteroid drugs, such as prednisone, betamethasone, if necessary. Insect bite allergy should be timely to go to the hospital, under the guidance of the doctor to choose the appropriate treatment, the above drugs should be used in accordance with medical advice.