There are three common types of lisp in children, the first one is that some preschoolers cannot pronounce the vowels like g, k, p and the syllables made up of these vowels, such as pronouncing the national anthem as “seize N”, saying “pants” as rabbit”, and so on. The second type is the one with some organic oral lesions, such as cleft palate and short tongue ligament. Newborns or infants with severe cleft palate often have sucking and swallowing dysfunction, resulting in nutritional impairment and choking during breastfeeding and aspiration pneumonia. Children with mild cleft palate often have a pronounced open nasal sound and a short tongue ligament, so they should seek early surgical treatment from a dentist to create normal articulation conditions. The third type of children with systemic diseases, such as developmental delay, mental retardation or autism, are unable to pronounce many words, and should be treated by pediatricians or systemic specialists.