Children always have red and hot ears at night, which are mostly considered to be caused by physiological phenomena, phytodystrophy, auricular chondromalacia, eczema of the outer ear, etc. They need to go to the hospital for examination and treatment after clarifying the causes. I. Physiological factors: Children are active and always over-exercise and move during the day, which accelerates blood circulation in all parts of the body at night, plus the thin skin of the ears is rich in blood vessels, resulting in redness and heat in the ears always at night. In addition, if you go from a cold place to a place with higher temperature, this kind of situation will also occur. If there is no other discomfort, it is normal and no special treatment is needed. Second, disease factors: 1. Phytodystrophy: Related to genetics, children with phytodystrophy can have red and hot ears at night, along with other systemic symptoms, such as headache, dizziness, numbness in the extremities, fever in the heart of the hands and feet, and fever in the skin around the body, but with normal body temperature. Treatment is to actively remove the triggering factors, such as mental stimulation, tension, overwork, etc., and to do psychological counseling, and to regulate the plant nerve function with glutamate and vitamin B1 as prescribed by the doctor. For treatment, plasmacytic chondritis should be treated with puncture and fluid extraction under the guidance of a physician, and also with cryotherapy, while septic chondritis requires the application of a sufficient amount of effective antibiotics to control the infection, such as penicillin. The treatment requires active identification of allergens and the administration of anti-allergy drugs such as Benadryl and loratadine as prescribed by the doctor. If your child’s ears are itchy, you should not scratch them to prevent them from getting infected.