As an important measure to actively respond to the aging of the population, smart health care is a new format and new model that emerges from the integration of new generation information technology such as artificial intelligence, big data, cloud computing, Internet of Things, and intelligent information products with traditional health care. Smart pension through technical means from the remote monitoring, real-time positioning, unified platform information interaction and other angles to create an information-based pension service system to meet the modern, scientific and humanized pension needs of the elderly and families. In order to solve the problem of the loss of the elderly and the action trajectory tracking of the elderly in the smart pension community, we designed the action trajectory tracking system for the elderly in the smart pension community. This product is based on gait recognition and specific tracking of the elderly's action track record, and combines the big data developed by the intelligent old-age community with the gait recognition system. Its functions include the entry of the elderly's identity information database, action track tracking, out-of-range early warning, lost track information search, etc. It provides users with "identity recognition-route tracking-loss prevention" service to realize the track tracking of the elderly and the prevention of loss.