When the patient has different hearing in two ears, it is often the case that one ear has obvious hearing loss, and the patient needs to go to the hospital in time for examination, and it is often necessary to further check the structural condition of the ear and the audiological function in detail, and it is usually possible to do the otoscopic examination, the pure tone threshold examination, the acoustic impedance examination, and so on, the details are as follows: 1, some patients may be due to the cerumen blockage of the ear, or acute and chronic otitis media, secretory otitis media, and other factors, resulting in hearing loss. Some patients may suffer from hearing loss due to cerumen blockage in one ear, acute and chronic otitis media, secretory otitis media, etc. Some patients may suffer from sudden deafness or sensorineural deafness, which may be related to long-term exposure to noise, or the deterioration of the function of the inner ear hearing organs due to ageing, and need to be treated and improved according to the specific condition.