Cerumen is commonly known as earwax. Generally, cleaning earwax in patients with fungal otitis externa needs to be done under the supervision of a doctor by cleaning the fungal mass and scabs with sterilized saline or hydrogen peroxide, used for swabbing dry. Fungal otitis externa, can be under the guidance of the doctor with antiseptic saline or 3% hydrogen peroxide solution (hydrogen peroxide) to clean the fungal clumps and scabs, used for swabbing dry, local application of dakinin cream or mold ointment and other antifungal drugs, or 1% salicylic acid spirit, 1% amphotericin B ointment and so on. If the patient’s ear canal has skin lesions, it needs to be cleaned after recovery. It is recommended that patients clean under the guidance of a doctor to avoid causing damage to the ear canal and aggravating the disease.