The redness and swelling of the face bitten by mosquitoes is a kind of allergic reaction, which can be relieved by means of topical medication (such as mint cream, compound benzylhydrazine ointment, etc.) and oral medication (such as loratadine, etc.) to relieve itchiness and eliminate the lesions, and there is no such thing as rapid elimination. 1. Topical medication: Patients can follow the doctor’s instructions to apply Chinese medicinal preparations, such as mint cream, dehumidifying and antipruritic ointment, salbutamol ointment, etc., to alleviate itching, or use cotrimoxazole, dexamethasone acetate, tretinoin cream, etc., to reduce discomfort. 2. Oral medication: If the effect of local medication is not good, you can take Benadryl, Loratadine, Cetirizine and other anti-allergic drugs orally. Attention should be paid to environmental hygiene, to avoid mosquito breeding, when going to the field, try to wear long clothes and long pants to prevent mosquito bites. Local allergy symptoms are more serious, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor symptomatic treatment, do not self-medication.