Since its reform and opening in 1978, China’s economy has grown rapidly and human life and physical well-being have improved significantly. The public health care system is an imperative guarantee of people’s life and physical health. It is necessary to establish a reasonable planning, a reasonable division of labor, and an efficient medical service system to improve the overall efficiency of health care services and ensure the physical health of the people. The balance of public health care services plays a very important role. It plays a very important role in safeguarding people’s basic right to health, regulating social fairness and justice, promoting the sustainable development of medical and health services, and building a harmonious society. Based on 5G sensor technology, this paper combines relevant research on sensor technology at home and abroad and comprehensively uses related theories such as sensing principles and health care services to discuss the internal operation mechanism of China’s public health care service system. It conducts experiments to compare health care services with 5G sensor technology with existing health care service systems. It compares its bed occupancy rates, hospital admissions and discharges, outpatient and emergency department volumes, and average inpatient costs. It studies the impact of 5G sensor technology on public health care services. The experimental results show that after adopting 5G sensor technology, the average bed utilization rate in the H hospital is 88.71%. The total number of hospitalizations was 9.845 million, and the total number of discharges was 8.668 million. The total number of outpatient visits was 44.259 million, and the total emergency department was 7.694 million. The per capita cost of inpatients in H hospital is 15,840 yuan, and the per capita cost of inpatients in W center is 9,661.75 yuan.

In terms of the medical information management system, it can effectively increase the resource utilization rate of medical and health institutions, optimize the management process, and provide relevant, efficient management approaches, all of which help medical and health institutions meet their internal and external demands to the greatest possible extent. However, the projects related to the information management system in hospitals or other medical institutions are characterized by high system complexity, multiple related links, and uncertainty of project demands due to their own professional and industrial characteristics, which are frequently manifested as many limiting factors in the construction process. It is essential to determine the kind of risk and evaluation methods to explore the risk evaluation indicators and formulate corresponding countermeasures for ongoing medical institution information systems projects. In such a background, this study establishes a perfect risk identification and evaluation system by taking the risk management of projects related to medical institution information system in R hospital as the research object and proposes the corresponding countermeasures as the reference for the establishment of the information management system.