Children with unclear speech, usually called speech disorders, can be caused by brain injury, hearing impairment, oral and muscle tone abnormalities, and tongue abnormalities, and other factors. Common causes 1, brain injury: if the brain management speech parts of the injury, can lead to nerve for local muscle control disorders, such as the articulation organs, oral cavity and other coordination decline or poor, can cause children’s functional dysarthria; 2, hearing impairment: some children with hearing impairment can hear the audio abnormal, and affect the feedback of vocalization, resulting in children spitting inaccurate, unclear; 3 , oral and muscle tone abnormalities: some children may have low abdominal tone, which may cause abnormalities in exhalation and spitting. And if children have oral function deficiency such as jaw weakness, it will also affect pronunciation and lead to unclear pronunciation; 4, tongue abnormalities: such as tongue tie is too short and tongue flexibility is poor, it will also affect pronunciation and lead to abnormal pronunciation; 5, other factors: such as poor language environment and poor development of central nervous system, etc. can also lead to children and other pronunciation abnormalities. Treatment methods 1. Under the guidance of doctors, use appropriate methods for mouth muscle training, such as rapping tongue, blowing balloons, puffing cheeks, etc.; 2. It is strictly forbidden to blame or scold, so as not to cause the child’s fear of speaking. In addition, during the growth and development period, especially at the age of 1-3, children may have abnormal pronunciation and slurred speech because their speech clarity has not yet reached the normal adult level. This is a normal physiological phenomenon and usually does not require special treatment.