After the eyes are swollen, patients can promote the swelling through cold compresses, but also can use alkaline substances to rinse, relieve eye itching and other discomfort, but there is no fastest way to reduce swelling. 1. Cold compress: after the eyes are swollen, the mosquito’s own secretions into the wound, will cause eye hypersensitivity, so that the patient’s eyelids appear degree of swelling, itchy and other allergic reactions. This situation can be localized cold compresses on the eyelids, cold compresses can make blood vessels contract, reduce blood extravasation into the tissue space, thereby reducing ocular tissue edema, relieve the patient’s discomfort. 2. Alkaline substances for flushing: experiments have proved that the secretions released after mosquito bites are acidic, patients can use alkaline substances such as soap and water, diluted ammonia and other secretions to neutralize, thereby reducing the symptoms of allergic reactions, to achieve the effect of swelling and itching. It is recommended that patients with significant eye swelling should seek medical attention to assess their condition and follow the doctor’s instructions for treatment.