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The purpose of this article is to explore new functions and experience methods for children’s air purifiers based on the theory of emotional design. The research method is, first, to collect perceptual vocabulary and typical samples, and use the semantic difference method to build a perceptual evaluation table. Secondly, the analysis data is imported into SPSS software for factor analysis and principal component analysis. Establish user demand models for children’s air purifiers through user interviews. Finally, using the hierarchical analysis method to get the three elements of design: shape, function, experience, and then use the three elements of design to guide practice. The significance of the research lies in the use of emotional design methods, which provide new solutions for communication between parents, children and purifiers.

In order to improve the efficiency of medical treatment for the elderly during sudden illness and optimize the first-aid service process in nursing homes, this paper uses the SET analysis method to obtain the design gap of the existing nursing-home emergency service system. Taking the elderly with coronary heart disease as an example, focus on their service acceptance and healthy lifestyle. Use the method of user journey map to visualize the daily behavior of the elderly, followed by the SWOT analysis method to obtain the market competitive advantage, and finally establish a coronary heart disease first-aid service system for nursing homes. It is hoped that this study will provide emergency medical service plans for elderly patients with sudden acute illness and provide a reference for the emergency treatment process of other types of diseases.

Objective: To further perfect service design of “rail to air transfer” mode at Beijing Daxing Airport, optimize the transfer flow and improve passengers’ “door to door” transfer experience. Method: Quality function deployment (QFD) method was introduced into the optimization process of service design. Firstly, the user demand for current “rail to air transfer” mode was collected through questionnaire survey and interview method, followed by analysis and classification using KJ method, user demand weight was determined via analytic hierarch process (AHP) method, the correlation between user demand and design elements was quantitatively evaluated through QFD method, and house of quality (HOQ) was constructed to complete the transformation from user demand into design elements. In the end, service contact analysis was implemented according to obtained parameters, the suggestions for improvement were proposed and the service optimization blueprint was constructed. Conclusion: Starting from user demand, QFD method was integrated with service design to optimize and innovate the service design of the existing “rail to air transfer” mode at Daxing Airport. This study has provided a new strategy and method for improving transfer service and user experience.