4-year-old children do not speak clearly, baby parents should do the following: 1, baby language fluent, just not clear diction, pay attention to the short tongue ligament and cleft lip and palate and other diseases, should go to the Department of Dentistry for examination, if necessary, surgery, after surgery will be normal speech; 2, baby does not speak clearly but normal intelligence, may be the result of poor language development, parents should teach their children to speak more, create a Parents should teach their children to speak more, create a good language environment for the child, encourage the child to speak more, communicate with children of the same age, train the child’s language skills, the baby speaks slowly and clearly; 3, the child does not speak clearly, but also accompanied by other aspects of developmental backwardness, such as intellectual backwardness, should go to the hospital to do brain magnetic resonance examination and intelligence assessment, under the guidance of doctors, targeted language training and intelligence improvement treatment.