There are three common reasons for children’s lisp: first, preschool children due to parents, elders place pronunciation and imitation lead to lisp, such a situation should be patient to correct pronunciation, because it is not organic lesions, so with the growth of age can generally be corrected. Second, there are oral organic lesions, such as cleft palate, tongue tie is too short, etc. Cleft palate children often have obvious open nasal sound, tongue tie is too short can not send a clear rolled back, should be early in the study of pronunciation before going to the stomatology department for surgical treatment. Thirdly, due to the systemic diseases caused by developmental delays, mental retardation and so on, many of these children are unable to pronounce, this situation should be in pediatrics or special education schools to learn to correct.