Eczema of the external ear is a polymorphic rash that occurs on the auricle, external auditory canal and surrounding skin. It is common in infants and young children. The main characteristic of this disease is itching with oozing. Parents of children with this condition often seek medical attention because their child is irritable and unable to sleep. Some children also come to the doctor with a smelly discharge from the ear. How is eczema of the outer ear treated? First of all, we should have some understanding of the causes of eczema. Eczema in children is mostly related to allergic reactions, and milk and fish and shrimp are possible allergens. Therefore, finding the allergen is the cure. However, finding a definite allergen is not easy in the actual treatment process. In the treatment of children with external ear eczema of unknown etiology, we first pay attention to adjusting the diet. For breastfeeding infants we encourage breastfeeding and weaning at the appropriate time. Do not change dairy products at will to reduce their stimulation of the gastrointestinal tract; for older children should avoid eating foods that can easily cause allergies, such as fish, shrimp, protein, etc.. Avoid scratching, do not wash with hot water, soap and alcohol, etc., and prohibit irritating drugs. Local treatment according to the principle of “wet to wet treatment, dry to dry treatment” 1. For those who are dry without exudation, use 10% zinc oxide cream, antibiotic cortisone ointment and other topical applications to protect the wound surface so that the crust can fall off and heal; when there are more dry crusts, first use 3% hydrogen peroxide to clean and then use the medicine. 2, less exudate, first rub 2% gentian violet solution, dry and then apply zinc oxide paste. 3, more exudate, with 3% hydrogen peroxide or furnace glycolate lotion to clean the exudate and scab, and then 3% boric acid solution wet compress, to reduce the exudate, and then use the above drugs to treat. Systemic treatment: 1, secondary infection, systemic and local application of antibiotics. 2.Take anti-allergic drugs, such as paracetamol or ketaminergic, etc. 3.When the exudate is particularly large, intravenous injection of 10% calcium gluconate and vitamin C supplementation can be used. As a common disease, children with external ear eczema should go to the hospital promptly, pay attention to diet under the guidance of the doctor, and be treated appropriately locally, which can be easily cured.