To be aimed at the wave, in order to understand the operating personnel in the specific location of beach. A personnel position system based on Internet of Things is designed in this paper. First, account for the wave on the beach, introduced the concept of the middleware of internet of things, the basic activities and characteristics. The system is mainly include satellites, base stations, electronic tags and a variety of terminal equipment. Read the operators body tag code by identifier read, the data transmission to the middleware module. Through process management, then transfer the data to the network layer. The server will analyze and process the data, then get the visual data display platform.