Eczema of the external auditory canal refers to the polymorphic rash that occurs in the external auditory canal and its surrounding skin, which can be treated by topical medications such as glycerite lotion and oral antihistamines and antibiotics. Patients with external auditory canal eczema first need to find and remove the cause of the disease as far as possible, the cause of which is unknown, should stop contact with allergy-prone substances, such as chili peppers, fish, shrimp, eggs and so on. Afterwards, according to the local performance of the topical medication for treatment. If there is a lot of exudate, you can use glycerine lotion to remove the exudate, and then use boric acid solution or chlorine acetate solution to apply wet compresses; if there is less exudate, you can use zinc oxide paste to apply locally. If the patient is accompanied by itching symptoms, you can take antihistamines to stop itching, such as loratadine, cetirizine, etc.; if secondary infection, you can take penicillin, erythromycin and other antibiotics for treatment. The use of drugs should be under the guidance of medical professionals to avoid adverse reactions.