It is an undisputed fact that hearing aids are helpful for infants and children with hearing loss. However, there is a lack of systematic understanding of the theoretical and specific operational methods to select suitable hearing aids for them. This article introduces some specific methods: First, for infants and young children with hearing aids guidelines 1, if infants and young children are diagnosed with sensorineural deafness, that is, permanent hearing loss, audiologists and parents must be as early as possible for them to match with the appropriate hearing aids, monaural normal can not be matched. 2.There is no uniform standard, pointing out the degree of hearing loss to what extent need to wear hearing aids. However, it is generally believed that infants and young children with permanent hearing loss in both ears, 1000-4000HZ, with an average hearing threshold of more than 30dBHL, should be fitted with appropriate hearing aids as soon as possible. 3.According to the limited information of audiological examination for infants and young children, the development of intelligence, language development, and the performance of hearing impairment at home and in the classroom, as the basic guideline for the selection of hearing aids for them. Methods of hearing evaluation for infants and young children: Where possible, audiologists should conduct various hearing tests for infants and young children as early as possible to find out their hearing threshold, pain threshold, optimal threshold and acoustic reflex threshold. Commonly used methods are as follows: Otoacoustic Emission – Screens newborns for hearing status. Auditory Brainstem Response to screen 2000-4000 HZ hearing for toddlers aged 1-6 months. Behavioral Audiometry to check the approximate hearing status for children aged 6 months-3 years. Acoustic impedance test to check the middle ear and acoustic reflex. Special factors related to hearing aids for infants and toddlers 1. Hearing impaired infants and toddlers, in the early stage of hearing and language development, live and learn language under the condition of hearing aids to compensate for hearing. 2. 2.Adults wearing hearing aids can adjust the volume of hearing aids according to their own hearing, while infants and young children can not, and infants and young children can only wear a fixed volume of hearing aids. 3, hearing impaired infants and young children with hearing aids amplification equipment, must be used to infants and young children can hear each other’s voices, but also to help their own pronunciation of speech. For this reason, it is important to consider the importance of monitoring and tracking spoken language skills. 4. Since the resonance characteristics of the external auditory canal of infants and young children are different from those of adults, the difference between the true ear measurement and the 2 ml coupling cavity measurement is also affected by different ages. Therefore, the electroacoustic signals and signal transducers used in infant audiometry may be different from those of adults. Third, the choice of hearing aids for infants and young children According to the above information, you can make the following choices: 1, the type of hearing aid: due to the infant and young children’s ear growth and development is not fully developed, wear parents or teachers need to help, so the back of the ear type of hearing aids are more appropriate. 2, assistive listening devices: in addition to the hearing aid, the hearing aid can be used for infants and young children. 2, assistive listening devices: in addition to choosing the right hearing aid for the deaf child, some assistive listening devices, such as FM radio frequency modulation system, telephone sensors (T) / (MT) and other (DAI) direct audio input should be configured, so that the deaf child in most of the living environment can make full use of the residual hearing, the development of language. 3. Ear-molded auditory sensory improvement. Auditory Rehabilitation Program After selecting a suitable hearing aid for the deaf child, parents must be allowed to master the use of hearing aids, maintenance knowledge. Make full use of the hearing aids so that the deaf child can learn the language. Deaf children trained in the provincial center, the teacher set up rehabilitation courses, home training of deaf children by the Department of Community Rehabilitation to help develop training courses to enhance the auditory speech training, auditory-visual discrimination training, conversation training, do not give up and miss the opportunity for rehabilitation. Other precautions 1. After wearing hearing aids, the hearing threshold of the sound field should be measured when possible. (1) turn single hearing threshold test (250-4000Hz); (2) narrow-frequency noise maximum sound pressure output test; (3) static situation when the measurement of speech resolution; (4) noise situation when the measurement of speech resolution. Hearing thresholds must be compared between the bare ear and after wearing the machine. For extremely deaf children with hearing loss, a larger volume should be given at 250-500-1000Hz. 2.Regular examination: that is, regular hearing examination and hearing aid adjustment. (1) Young children under 3 years old should be examined once every 3-6 months; (2) Children between 4-6 years old should be examined once every 6-9 months; (3) Children over 6 years old should be examined once a year.