Children with severe redness and swelling after mosquito bites are considered to be related to insect bite dermatitis, which can be improved by applying glycerite lotion, glucocorticosteroids and other medications, and selecting systemic medication if necessary. 1. Apply glycerite lotion: by applying glycerite lotion, it can effectively achieve the effect of astringency and anti-itching, and improve the symptoms of local itching and redness and swelling after mosquito bites in children. 2. Glucocorticoid ointment: after being bitten by mosquitoes, children can also apply glucocorticoid ointment, such as hydrocortisone, betamethasone ointment, etc., so as to achieve anti-itching and anti-inflammatory effect. 3. Systemic medication: For patients with more serious symptoms, in addition to the above local measures, it is also necessary to add oral loratadine, cetirizine antihistamines, and if necessary, oral glucocorticosteroids, such as prednisone, methylprednisolone, etc., to improve the efficacy of the treatment to shorten the course of the disease and improve the efficacy of the role. All of the above medications should be used under the guidance of a doctor, avoid self-medication, so as not to produce adverse effects and jeopardize their own health.