After the eyelids are bitten by mosquitoes, there will be localized swelling, itching and other symptoms, these symptoms are usually due to the mosquito body toxins into the eyelid tissues caused by allergic reactions, mainly through the general treatment and medication and other ways to reduce swelling. 1. General treatment: Early on, you can give local cold compresses, such as using a wet towel to apply cold compresses to the eyelids, which can promote swelling. Drink more water, pay more attention to eye hygiene, avoid rubbing vigorously. 2. Medication: If the swelling is mild, apply tobramycin dexamethasone ophthalmic ointment locally and take antihistamine drugs such as loratadine orally to fight allergies. If the eyelid swelling is serious or accompanied by facial and systemic reactions, you can take short-term oral glucocorticoid drugs to treat, such as prednisone. During the treatment period, good eye habits and cleanliness of the eye area should be maintained. If the symptoms are serious, consult a doctor.