With the improvement of living standards, the occurrence of language disorders in children is also increasing. Parents should detect and treat them early so as not to miss the best treatment time. Language is an important ability in learning, social interaction, and personality development. About 7-10% of preschool children have delayed language development, while 3-6% have language perception or expression disorders and affect later reading and writing as well as behavior and personality development. When we see children, many of their families ask, “Why does our child need language training?” In fact, there are many different types of language disorders, and the most common reasons for the first consultation are that the child is not speaking much or even not speaking at the age of speech; and that the speech is not clear. In addition to these symptoms of language disorders, there are other conditions that parents may easily overlook, but are also signs of language disorders, and for this reason, parents do not understand which cases require language training. How do you identify speech and language abnormalities in children? How do you identify the need for speech and language training? If you find that your child has any of the following symptoms, please bring him/her to the doctor for an interview and early intervention. 1. not speaking or speaking little at the age of speech; 2. not speaking clearly; 3. constantly repeating what adults say; 4. stuttering; 5. low intelligence; 6. constantly talking to themselves; 7. not using sentences to communicate in daily life at 24 months; 8. not enjoying group games with other children; 9. abnormal speech intonation and rhythm; 10. after cleft lip and palate surgery; 11. cerebral palsy; 12. hearing impairment; 13. 12. hearing impairment; 13. swallowing impairment; 14. salivation; 15. sequelae of encephalitis; speech-language impairment is not a single condition, but can be accompanied by behavioral and emotional disorders. Some parents may respond that their children are very willful, temperamental, disobedient, not afraid of pain, etc. These are some of the behavioral and psychological problems that can occur in children with speech-language disorders, and through training interventions, these behavioral and language problems can be corrected.