In order to satisfy the requirement of management in campus, an application platform of internet of things which used in intelligent campus is designed. The function of the system is achieved by embedded processor PXA270, ARM Linux operation system, new communication technology ZigBee and video monitor technology. The hardware and software designs of this system are illustrated in detail. By building embedded stream media server, the system completes video capture, compression, storage and transmission. The paper makes full analysis for the flow of programming.