After being swollen by mosquito bites, you can usually choose topical ointment, oral medication, home care and other ways to relieve. 1. Topical ointment: After being bitten by a mosquito, the mosquito may inject trace toxins into the body, and the patient is allergic to them, resulting in localized redness, swelling and itching. At this time can be applied through the external glycerine lotion and Zihuadidin, can play the role of cooling and itching. 2. Oral medication: mainly for patients with more serious local allergy symptoms, oral loratadine, cetirizine and other drugs, so as to achieve anti-itch and anti-inflammatory effect. 3. Family care: patients should avoid staying in places with more mosquitoes, and should do a good job of protection. Avoid excessive scratching of the local area, which may lead to ulceration and infection. The above medication should be used under the guidance of a doctor, not blindly self-medication, in order to avoid adverse effects.