Hand swollen by mosquito bites, can be dealt with by rinsing, applying drugs, oral medication and other methods, clinically there is no rapid reduction of swelling. 1. Rinse: swollen mosquito bites, the first time the use of soapy water and other local wound cleaning, can play a rapid swelling as well as the role of itching. Because mosquito bites human skin, can output ant acid, anticoagulant and protein of unknown composition, which leads to allergic reactions, the use of soapy water can neutralize the ant acid, reduce itching and other discomfort. 2. Apply drugs: after rinsing, you can use glycerite lotion or peppermint lotion to apply drugs, which can play the effect of cooling and relieving itching; if the local swelling is serious, you can apply glucocorticosteroid drugs under the guidance of doctor, such as hydrocortisone cream, dexamethasone cream, etc., which can play the effect of anti-inflammatory and swelling. 3. Oral medication: For patients with severe itching and swelling after being bitten by mosquitoes, oral antihistamine medication can be taken under the guidance of a doctor, such as loratadine, cetirizine, etc., which can play a role in relieving allergies. The use of specific drugs, need to be under the guidance of a professional doctor, not blindly self-medication.