Three-year-olds who do not speak clearly are often considered to be abnormal, and parents need to pay attention to them in a timely manner. Usually three-year-olds speak more clearly, if the child’s speech is still unclear at this stage, it is considered to be abnormal. It may be due to hearing impairment, short tongue tie, etc. Parents need to pay attention to the cause of the problem and take targeted treatment after clarifying the cause. At the same time, you need to guide the child more, actively correct the child’s pronunciation, and also need to interact with the child, improve the child’s daily environment, more use of Mandarin to communicate with the child, and if necessary, also need to give the child language training, so as to help the child to improve the symptoms. If the tongue tie is too short, oral structure abnormalities, etc., also need to be corrected through surgery. It is recommended that parents should pay attention to the unclear speech of a three-year-old child and treat the child according to the cause of the disease.