Poor pronunciation can be caused by a short tongue tie, hearing loss, or other abnormalities in the articulation area. 1. Short tongue tie: Children’s tongue tie is naturally short, so the tongue can not stick out of the mouth or can not be fully upturned, which restricts the pronunciation, and the pronunciation will be not standardized. 2. Hearing loss: children with congenital hearing loss will directly lead to hearing loss, receiving insufficient information from the outside world, reducing communication with others, and consequently, language ability will decline and pronunciation will be inaccurate. 3. Abnormalities of other articulation parts: articulation requires the joint participation of the larynx, tongue, soft and hard palate, cheeks, lips, teeth, etc. When one or several parts of the child are missing, spasticity, low muscle strength, there will be inaccurate articulation phenomenon. There may be other reasons for children’s inability to pronounce, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.