Speech disorders can be categorized into primary speech disorders and secondary speech disorders. Primary speech disorders may be caused by some organic lesions, including short tongue tie, etc. If the speech disorder is caused by this reason, it should be treated in the hospital. How to treat speech disorder? First, the treatment of abnormal phonology is mainly for children with mispronunciation. Second, the treatment of speech abnormalities. Third, the treatment of voice problems. In the field of pediatrics, voice therapy is mainly used for vocal training for children with hearing impairment and mental retardation. Fourth, the treatment of speech disfluencies, mainly for speech disfluencies and stuttering.