Children’s ear redness and swelling, accompanied by itching, are seen in two causes: first, due to allergy-related symptoms, the symptoms caused by the patient’s contact with the relevant objects, or after eating the relevant allergens, will appear sudden bilateral ear redness and swelling, accompanied by itching, and may also be accompanied by a generalized papular rash, as well as eye itching, nasal itching, throat itching symptoms, treatment patients need to avoid allergens, you can take oral Kairetan, or loratadine for treatment, about three days can be cured. Secondly, the symptoms caused by mosquito bites are usually unilateral, the mucous membrane of the ear is loose, and the mosquito bite will lead to local swelling and itching, avoid repeatedly scratching the ear, which can easily lead to local infection, you can use iodophor to wipe and disinfect locally to stop the itching, and it will gradually heal in about a week.