In the post-epidemic era, based on the epidemic prevention needs and potential health needs of the elderly users, we will study how the medical APP for the elderly can be better adapted to the evolving times and better meet the needs of users. In the future epidemic era, the medical needs of the elderly as the starting point, sorting the existing methods and existing problems of medical APP through literature research, using quantitative research methods such as questionnaire survey and user data analysis, and taking the medical APP as an example to analyze its feasibility. Based on the Analysis Results of Hierarchical Analysis (AHP), the design strategy and method of the medical APP for the elderly in the post-epidemic era are constructed. At present, there are great differences between the medical APP for the elderly and the user needs, especially in the content and form need to focus on improvement. Older people have shown great interest in the use and interest of medical APP. With improved APP content, the elderly can learn and understand complex medical knowledge, thus facilitating more elderly users. The medical APP for the elderly can be upgraded and optimized to benefit both medical institutions and the elderly at the same time, improve the user experience and satisfaction of the audience, and provide ideas for the design and development of the medical APP for the elderly.