There are so many hearing screening methods for small ears, specifically some? In the case of different physical conditions, age and requirements, how to choose the hearing examination method suitable for you, in order to more truly respond to the state of hearing? 1.Conventional otoscopy, including the examination of the auricle, external auditory canal and tympanic membrane, which is mainly to check whether there are malformations of the external auditory canal, cerumen embolism, perforation of the tympanic membrane and other factors affecting hearing. Cerumen impaction can restore hearing after rinsing, while malformation of the external auditory canal and perforation of the eardrum can be treated surgically to improve hearing. 2.Pure tone audiometry: It is the most common audiological examination method to test the smallest sound that an individual can hear at different frequency points, and according to the results of pure tone audiometry, the degree and nature of hearing loss can be basically determined. It is the most common audiological examination method. It is suitable for children and adults who are able to cooperate with the hearing test, and is a subjective hearing examination, which requires the patient to make a certain response after hearing the sound, such as pressing the key or raising the hand when hearing the sound. 3.Speech Audiometry: Using speech signals as the stimulus sound, the patient is asked to repeat the given speech signals to evaluate the patient’s actual speech communication level. Speech audiometry can help to understand the degree of difficulty in speech perception of the hearing impaired, and can well reflect the subject’s speech communication ability in daily life. 4, middle ear acoustic impedance: used to objectively check the mobility of the tympanic membrane and the auditory ossicle chain and whether the middle ear function is normal or not, for judging whether there is any middle ear effusion and pharyngeal function decline is of great significance, and it can be used for patients with stuffy ears, colds and other symptoms. 5, otoacoustic emission: to detect the function of the outer hair cells of the cochlea and screen whether there is hearing loss, the examination is simple, mostly used for newborns and infants screening. 6.Cochlear electroencephalogram: Recording compound action potentials from the cochlea and the auditory nerve after acoustic stimulation is one of the most important methods to diagnose inner ear diseases. When children have poor response to sound, but bilateral otoacoustic emissions are passed, or when auditory nerve spectrum disorders are suspected, cochlea electrogram is needed. 7.Auditory brainstem response: Utilizing acoustic stimulation to evoke recorded brainstem electrical responses, it is an objective examination to detect the function of the auditory system and the brainstem. It can be used for hearing screening of newborns and infants, identifying organic deafness and functional deafness, and is valuable for diagnosing occupational lesions in the pontine cerebellar peduncle and evaluating brainstem function. 8.Multi-frequency steady state evoked reflection: belongs to the objective hearing examination, for the identification of pseudo-deafness and central nervous system diseases caused by the ear has a supplementary role, clinically used to assess the hearing thresholds of children with severe deafness, as an important reference index for the selection of hearing aids. 9, 40Hz evoked response: The test uses a short pure tone of 500Hz as the stimulus sound, thus reflecting the low-frequency auditory function status. It is similar to the brainstem evoked potential as an objective hearing examination method. Unlike the brainstem evoked potential, this method is frequency-selective, which to a certain extent makes up for the shortcomings of the brainstem evoked potential that cannot reflect the low-frequency hearing status. 10, children’s behavioral audiometry: pediatric behavioral audiometry is a subjective (need to be subjected to the child’s response to the sound) hearing test methods, to determine the child’s behavioral expression of the response to sound, such as turning his head to the sound source or make some kind of movement, in order to determine the child’s response to the sound of the auditory sensitivity, the audiologist based on these responses and then combined with the results of the objective report to assess the child’s hearing loss and the impact of the loss on the child’s ability to communicate. child’s ability to communicate. There are three types of behavioral tests for children, including observation audiometry, visual reinforcement audiometry, and play audiometry, which are appropriate for children of different ages and developmental stages. (1) Observation audiometry: When the infant is in a light sleep and quiet state, a high-intensity stimulus sound is given, and when the stimulus sound appears, it is observed (within a certain period of time under time-locking) whether the infant shows audible behavioral responses (e.g., eye-face reflexes, etc.) to initially assess the hearing of infants and young children. It is commonly used in clinical practice to assess the hearing status of infants and children under 6 months of age. (2) Visual Reinforcement Audiometry: The most commonly used method of Conditioned Directional Reflex Audiometry (CDA), which applies visual stimuli to reinforce the subject’s response to stimulus sounds, so as to obtain information about the subject’s auditory response to the stimulus sounds. It is commonly used to assess the hearing status of infants and children in the age range of 7 months to 2.5 years. (3) Game Audiometry: This involves the child participating in a fun game that teaches the child to respond clearly and reliably to stimulus sounds. It is commonly used to assess the hearing status of children in the age range of 2.5 to 6 years.