The comprehensive use of data from multiple sensors for moving target tracking is a long-term problem in multi-sensor data fusion. In wireless sensor networks, state estimation and fusion are the main research issues in target tracking. Distributed is the essential feature of wireless sensor networks.Therefore, with the development of wireless sensor networks, the problem of distributed state estimation has also attracted the attention of scholars. The intelligent medical diagnosis system is composed of a traditional Chinese medicine diagnosis system, a western medicine diagnosis system, and a medical record database. The TCM diagnostic system and the Western medicine diagnostic system are the main body of the system. The TCM diagnostic system is based on a case-based reasoning model, using human body information collection equipment to simulate the process of TCM diagnostics and realize TCM diagnostic engineering, while the Western medicine diagnostic system is a neural network optimized based on genetic algorithms. Model, obtain the diagnosis and treatment method of the disease from the medical record database of the hospital information system. The basic standards for nursing homes issued by the Ministry of Health have promoted the standardized development of nursing homes.However, since the development of China's elderly care homes is still in its infancy, it makes the service content and functional positioning of elderly care homes, and orderly connection with relevant medical institutions and elderly care institutions, The main body of institutional management and the formulation of supporting policies are still in the exploratory stage. Among the chronically ill population, the proportion of elderly people ranks rst. At the same time, due to the particularity of the elderly population, the recovery time is lengthened. Due to various reasons, they cannot get adequate medical services in the hospital. Due to the impact of diseases, the health of the elderly is not optimistic, and even loses their lives. Therefore, the daily immediate monitoring of the elderly is very necessary.