Patient WANG xx, male, 32 years old. On October 3, 2021, he went to see a doctor because of "repeated binaural pruritus for 3 years, aggravated with burning sensation for 1 week". In the past three years, patients are prone to recurrent ear pruritus, accompanied by ear canal exudation and burning sensation, and external ear swelling and pain and skin erosion in severe cases. Western medicine was diagnosed as "eczema of external auditory canal" and treated with glucocorticoid ointment and oral antihistamine. The symptoms were well controlled in the early stage. After long-term use, the curative effect gradually weakened, and it was easy to relapse after withdrawal. One week ago, the patient was tired due to working overtime. After a large amount of drinking, his ears again appeared itching and burning discomfort, accompanied by a sense of moisture in the ear canal. He applied halometasone cream and ofloxacin ear drops on his own without obvious relief for 5 days. Now, in order to seek traditional Chinese medicine treatment, he came to the otolaryngology department for medical treatment. The ear examination showed that the skin of his ears was diffuse flushing, exudation and clear secretion. Since the onset of the disease, the patient has been irritable, had a fair diet, urinated yellow, had a row of stool for about 3 days, and had a bad night's sleep. ,Four diagnostic information, clear consciousness, slightly red complexion and fat body. The voice is clear, the breath is symmetrical, and there is no abnormal smell. The tongue is red, the moss is yellow and thick, and the veins are floating. ,TCM diagnosis, Eczema of external auditory canal, wind heat and dampness evil invading the ear. ,Western medicine diagnosis, eczema of external auditory canal. In traditional Chinese medicine, Xiaofengsan is added and subtracted for internal treatment, and chrysanthemum, dandelion, phellodendron, and cassia grass are used for external treatment. Good results are achieved by wet compress of the outer ear. ,Efficacy evaluation, remarkable effect. ,Outcome, improved.【,Keywords,】 Eczema of external auditory canal Wind-Heat-Dampness; Xuanerchuang; Xiaofengsan【,Suitable for reading majors,】 professional Otolaryngology, otology, dermatology, etc