For 3-year-old children who still do not speak clearly, the following methods need to be used to improve: 1, let the child learn more, parents teach diligently, often caused by the child’s poor language environment, such as the child’s family speaks Mandarin less time, or and the child is not enough time to interact, the child often lack of imitation objects, resulting in less clear speech situation. After giving children language training, most of them can be corrected quickly; 2, due to oral structure abnormalities caused by the timely plastic surgery for children. The reason why some children do not speak clearly is due to abnormal oral structure or short tongue ligament and other reasons. In this case, the child should be given surgery in time, otherwise it is difficult to fundamentally correct the situation of unclear speech.