Vygotsky emphasizes the importance of symbolic play, suggesting that the impact of imaginary games on development includes general cognitive and social skills, memory, language, inference, the line between appearance and truth, and the inner language. He believes that when children use language to play the game, they will find the correct use of language, learn new words and usagefrom the situation, and in the play game, different points of view exchange, discussion, persuasion, argument, all help children practice a lot of language skills. It is known that young children at 3-4 years of age from family life to school learning language development and social learning transfer key period. The process of language learning is influenced by the living environment and the interaction and influence of people around. The natural conversation in life situations is most effective. So I chose the role-playing play area to design and develop the language of children.In role-playing games, students learn social skills and skills in areas such as language and literacy by playing role models they perceive and imitating their social behaviors and language.It can also improve young children's active communication ability through role-playing games, have fun with classmates, and further use spontaneous language to speak out about the content of communication and dialogue, and learn their language naturally.The material preparation and situational arrangement of role-playing games are essential, and whether the material is abundant directly affects the quality and play of the student-playing game.