Hearing aids for children are just like people wearing glasses for the first time or getting a new tooth, there is an adjustment process. Hearing aids are an important tool to help your child regain his or her hearing and are a necessity for deaf children. The basis for accurate hearing aid fitting is an accurate audiological examination; and an accurate audiological examination cannot be achieved without the subjective cooperation of the test subject. In young children, especially those who are not yet capable of speech, it is difficult to obtain an accurate hearing because of the lack of subjective cooperation. Therefore, a completely accurate hearing aid fitting is difficult to achieve for young children, and there is no good solution to this problem yet. However, if hearing aids are not fitted as early as possible, the development of young children’s language skills will be affected, which in turn will affect their physical and mental development. Therefore, despite the difficulty and poor accuracy, it is important to make every effort and fit young children with hearing aids as early as possible. There are several principles that need to be grasped when fitting a deaf child with a hearing aid: 1) it is important to be fitted and to do so as early as possible; 2) whenever possible, it is important to fit both ears; and 3) behind-the-ear hearing aids are perhaps most suitable for younger deaf children. If you choose a behind-the-ear hearing aid, make sure to use an eardrum. 4. Choose a hearing aid that has good performance and quality, with a wide range of function adjustment and a little more power, but with strong sound output control. 5. Carefully observe the hearing response of the child with the hearing aid, check the child’s hearing frequently, and adjust the performance of the hearing aid according to their response at any time.