The eye was swollen by the mosquito bite, because the local skin by the mosquito saliva stimulation, thus appearing inflammatory reaction caused. Want to reduce the swelling should promote vasoconstriction, eliminate the inflammation, but any relief methods need a certain amount of time before the effect can occur, so there is no such thing as a rapid method of reducing swelling. Usually, patients can apply cold towels to the lesions to promote vasoconstriction, which in turn can relieve swelling, itching and other uncomfortable symptoms. In addition, patients can also reduce swelling through soap and water rinse, topical medications, oral medications, etc. 1, soap and water rinse: because the mosquito in the bite of the patient’s eye skin, the saliva secreted is acidic, and then need to use soap and water or other alkaline solution rinse, to achieve the effect of neutralization, can to a certain extent to relieve the bite swelling, redness, etc., but need to pay attention to avoid flowing into the eyes; 2, Topical medications: Common topical medications include Denide cream, and also suitable topical antihistamines can be selected under the guidance of a doctor or pharmacist, with attention to avoiding drops into the eyes when applied; 3. Oral medications: If the swelling of the eyes cannot be relieved after the above-mentioned methods are applied, the patient should promptly go to the hospital and follow medical advice to take oral antihistamines such as cetirizine and loratadine to promote inflammation. If there is difficulty in opening the eyes, medications such as methylprednisolone and antibiotics should also be used under the guidance of a doctor.