Baby ear swollen and red and thick may be related to mosquito bites, cold factors, allergic factors, etc., need to take targeted measures for different reasons.1, mosquito bites: generally occurs in the summer, mainly with the mosquitoes to go too many places. Because the baby’s skin is relatively thin and tender, mosquito bites baby’s ear after toxin stimulation, it is easy to appear baby ear swollen and red and thick. Usually do not need special treatment, you can use iodine povine for local disinfection, the key is to prevent the baby from further scratching the affected area, in order to avoid infection, the symptoms can be relieved after 2-3 days. If the symptoms are not relieved or the itching is obvious, you can use topical glycerin lotion under the guidance of the doctor, which can improve the symptoms; 2, cold factors: if it happens in the cold winter, it may be caused by frostbite in the ear. Because the baby’s ear blood microcirculation is poor, by the external cold factors, easy to frostbite, so it will cause the baby’s ear swollen and red and thick symptoms. You can follow the doctor’s instructions to apply local frostbite cream, at the same time to pay more attention to the ear parts of the warmth, you can wear earmuffs; 3, allergic factors: if the baby belongs to the allergic body, in contact with allergens, may be manifested in the baby’s ears swollen and red and thick symptoms. Allergens can usually be divided into contact and edible two kinds, it is best to cooperate with the doctor to clarify the specific allergens, and then to avoid re-exposure to prevent recurrence of allergic symptoms. At the same time, you can follow the doctor’s instructions to apply local glycerine lotion, if necessary, follow the doctor’s instructions to take oral cetirizine hydrochloride and other anti-allergy drug treatment.