Language delays are accompanied by mental retardation, neurological abnormalities, not only verbal communication disorders, but also visual disorders, inattention, reduced ability to focus on something and maintain a certain behavior. Therefore, language training for children can be difficult to accomplish when done as seriously as for adults. Children are naturally playful, and play is an enjoyable activity that is voluntary, completely relaxed, and not forced. Play therapy uses active, purposeful activities to train children, using every aspect of daily life as a training example, which can be easily accepted by the child. The first step in training children is to integrate yourself into the child, try to make the child accept you, trust you, let the child feel that you are his playmate rather than teacher, or even let the child guide you first, follow the child’s thinking, after he accepts and trusts you, then gradually guide him in the game, and carry out the training plan easily and happily. For children with speech delay, rehabilitation therapy in the form of games for comprehension, expression, manipulative topics and communication is provided. 1.Communication therapy: Use games such as hide-and-seek, eagle and chicken, and ball toss to increase emotional communication with the child. 2. Comprehension training: (1) Place 3-4 pictures of daily necessities in front of the child, and compete to grab the pictures instructed by the therapist to see who gets more. (2) Tell the child a story, ask him/her a question and give him/her a reward for a correct answer, etc. 3. Expression training: (1) Gesture expression: In the situational mode, train the child to make gestures such as waving goodbye, nodding, shaking head and making phone calls. (2) Oral expression: In the form of playing cards, the therapist and the child take turns to show the pictures in their hands and say the names of the pictures, and when the child has difficulty in doing it alone, the therapist gives help and lets the child imitate the pronunciation. (3) Look at the pictures and tell a story with the child. (4) Operative subject training: Work with the child to finish building blocks, stringing beads, cutting things, puzzles, etc. In this process, we can train the concepts of size, color, shape, how many, front and back, left and right, top and bottom, etc., and we can also train to understand and express.