Children’s unclear speech may be related to the short tongue tie, but it may also be related to the relaxation of mouth muscles, shallow and weak breathing, and so on. 1. Short tongue tie: It can cause the tongue not to be able to turn up and stick out, which leads to poor articulation and poor sucking function, etc. Tongue tie can be cut off after the child is 6 months old. 2. Orofacial muscle laxity: it can lead to inability to pronounce the larynx correctly and inability to lift up the tongue. Parents should take the child to a rehabilitation center for rehabilitation exercises under the guidance of a doctor, or daily training such as puffing cheeks and blowing up balloons. 3. Shallow and weak respiration: This can lead to unclear articulation, low voice and short speech. Parents should also take the child to a speech rehabilitation center for professional rehabilitation. If the child’s speech is not clear there may be other reasons, it is recommended that parents should take the child to the hospital in a timely manner, under the guidance of the doctor to clarify the diagnosis and take effective treatment measures.