A set of wireless sensor network technology, GPRS positioning tracking, video monitoring, entertainment and management in one of the Internet Of Things(IOT) system in intelligent playground is presented. The structure of the system design is introduced, as well as the working principle, system function and the software structure. It is implemented based on Things Oriented Architecture(TOA) and Things Oriented Communication(TOC) middlewares. The system is provided with functions like device Agent, Radio Frequency Identification(RFID) intelligent identification, GPS tracking, network video monitoring, equipment leasing management, state environment monitoring and entertainment wireless intelligent management etc.