question: Under the influence of the COVID-19, the analysis of physical health data is helpful to grasp the physical condition in time and promote the level of prevention and control of the epidemic Especially for novel corona virus asymptomatic infections, the initial analysis of physical health data can help to detect the possibility of virus infection to some extent The digital information system of traditional hospitals and other medical institutions is not perfect For a large number of health data generated by smart medical technology, there is a lack of an effective storage, management, query and analysis platform Especially, it lacks the ability of mining valuable information from big data Aiming at the above problems, the idea of combining Struts 2 and Hadoop in the system architecture of the platform is proposed in this paper Data mining association algorithm is adopted and improved based on MapReduce A service platform for college students' physical health is designed to solve the storage, processing and mining of health big data The experiment result shows that the system can effectively complete the processing and analysis of the big data of College students' physical health, which has a certain reference value for college students' physical health monitoring during the COVID-19 epidemic