Fungal infections of the ear canal can be treated by removing dirt from the external ear canal and applying ear drops of 1% to 3% salicylic acid ethanol solution or 1% ~2% muscimol ethanol solution. Topically, spray the external auditory canal with mycotoxin or apply imidazole broad-spectrum antifungal drugs. Select sensitive antifungal drugs based on fungal culture results. Keep the external auditory canal as dry as possible. Give sensitive antifungal drugs intravenously if the condition is severe. There are many types of ear infection fungi, with Aspergillus, Penicillium and Candida being the more common. When the external auditory canal water or accumulation of secretions, long-term use of antibiotic liquid ear drops, etc., more susceptible to fungal infections. Generally, there are itching and stuffy feeling in the ear, sometimes itchy, worse at night, the external ear canal is moist, there may be hearing impairment, tinnitus or even vertigo. Usually pay attention to the prevention of lifestyle habits, keep the external auditory canal dry, and use cotton swabs to wipe dry the external auditory canal in time after water ingress. When the external auditory canal is painful and itchy or there is a small amount of secretion, you can drop 4% boric acid ethanol solution (the solution has a slight irritation of the skin, should not be used for a long time), remove the dirt of the external auditory canal, the local application of broad-spectrum antifungal drugs, such as fluconazole and other medications; the condition of the serious cases of intravenous administration of sensitive antifungal drugs. Ear diseases suggest the rational use of antibiotic ear drops and hormones. So as not to cause fungal disease of the external auditory canal, the use of medication should be under the guidance of a doctor.