Hearing aids can be dispensed in hospitals or in professional hearing fitting centers. Hearing aids are a relatively common medical commodity. If the patient is simply hearing impaired and does not have an ear disease, he or she can go to a professional audiology center and choose the right hearing aid. Hearing training centers also have professional hearing examination as well as ear canal examination equipment, and can choose the right hearing aid for the patient according to the patient’s actual situation. If the patient’s ear is diseased or in need of treatment, he or she needs to go to the hospital and have a professional otolaryngologist conduct an examination and treatment, and then according to the patient’s needs and the situation of hearing loss, choose the right hearing aids. Patients should not choose hearing aids from unqualified places in order to avoid further damage to their hearing. If there is any discomfort, timely medical treatment, under the guidance of a professional doctor.