In the post epidemic era, the construction of intelligent fitness post and sports service system has become a meaningful way to improve residents’ physical fitness and health, and this study aims to explore practical strategies in this field. A fitness station model combining medicine is adopted, and big data technology is utilized to realize real-time monitoring of physiological data and screening of health hazards for fitness groups. Meanwhile, a framework of urban brilliant sports service system is proposed to ensure the integrity and coordination of the service system. The study also used the fuzzy comprehensive evaluation and factor analysis models to assess the sports service level. The results show that the fitness model of medical integration significantly improves the physical fitness of middle-aged and elderly people. In addition, through the case study of sports public services in Province S, it was found that the ratings were high in cultural and social functional values, but the fundamental applicable values still need to be strengthened. The comprehensive evaluation results show that the overall level of sports public services in Province S is good, but there is still room for improvement.