Hearing screening tests: a. Otoacoustic emission, which is a relatively simple test and is done more often for children, especially infants and toddlers. Second, pure tone audiometry, this test is mainly for children or adults who can cooperate. These two tests are objective hearing tests and are good for identifying pseudo-deafness or other neurological deafness. The choice of the test method depends on the patient’s physical condition, age and requirements. It is important to cooperate with the doctor during the examination process and to clarify the specific condition before going to the ENT department to see if follow-up treatment is needed.