1, children's pronunciation is not allowed to find the reason through speech pathology analysis, which can not only distinguish whether it is a normal phenomenon, but also further determine the cause of language disorder, so as to achieve the purpose of timely treatment or correction.

2. There are many reasons for unclear speech. Some may be complicated, some may not be found, and some may be hidden, such as occult cleft palate and mild hearing impairment, which are not easy to find.

3. Therefore, if the child can't speak clearly, he can't take it lightly.