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.