The work aims to propose a comprehensive evaluation system based on KJ method, AHP-entropy weight method and SD method to strengthen the connection between the elderly-oriented demand elements of public space facilities in old neighborhoods and the product design and optimize the experience of the elderly in using such facilities. Firstly, the KJ method was used to collect, integrate and screen the elderly-oriented demand elements of public space facilities in old neighborhoods. Secondly, the evaluation index system was constructed by the AHP method, and the comprehensive weights of each demand index were calculated and prioritized by the AHP-entropy weight method. The SD method was applied to evaluate the satisfaction to elderly-oriented public space facilities in an old neighborhood in Xuzhou. Finally, the elderly-oriented evaluation score of the public space facilities in the neighborhood was derived according to the index weights and satisfaction evaluation results. The scientificity and practicality of the evaluation system were verified through actual cases, and the direction of optimizing the elderly-oriented design of public space facilities was proposed based on the comprehensive evaluation results. The evaluation model combines the actual demands of the elderly groups and the professional judgment of industry experts, providing a theoretical basis and quantitative indicators for optimizing the elderly-oriented design of public space facilities in old neighborhoods, which is important for improving the satisfaction of the elderly groups in using public space facilities.