Atomization therapy is the most important treatment for children in respiratory department, and the design of intelligent atomizer for preschool children should pay more attention to user experience. The target users of this product are preschool children who need atomization treatment, and the application scenarios are children's hospitals or families. The design innovation lies in: adding a touch screen to the main machine of the atomizer, designing an intelligent atomizer for preschool children based on the concept of situational interaction and the game-based medical treatment method; Through the analysis of the thinking characteristics, learning methods and cognitive psychology of preschool children, using its psychological characteristics of "self-centralization" and preference for metaphor, the design of atomization game is carried out to guide children to understand that atomization treatment is a positive and positive process, so as to reduce the panic of seeking medical treatment.