The work aims to clarify the content and standards for analyzing train sample design, and obtain accurate experience requirements according to the design principle of "based on facts". Firstly, Based on Hassenzahl's research on emotional experience, a positive quality theory model and its demand insight path were proposed to analyze and extract the emotional experience demands of train passengers. Then the Kano model was used to conduct qualitative analysis and prioritization of demands. Finally, the method was verified by the world-renowned children's train "Aso Boy". It obtained 22 requirements and their priorities, and summarized the strategies for children's train experience design:The space design should focus on the provision of dining places, as well as the space segmentation according to the user hierarchy; The facility design should focus on parent-child interaction; The painting design should focus on the "Train shell"; The service design should focus on providing conditions for parents to accompany. This method can help designers gain insight into the experience demands and priority ranking of sample trains, and provide decision support for optimizing the train's experience and guiding the design of similar trains.