INT5500 module is chosen as the core power line communication（PLC）hardware module and S3C2440 processor module is used as the core module of the controller module.The multimedia sensor surveillance system adopts client/server（C/S） mode.Real-time monitoring of the environmental temperature

humidity and video image is realized on the front terminal and real-time display on the hand-hold terminal

and datas can be stored in the external memory by USB.The test data shows that operation of the system is stability

expandability is strong

and is suitable to be used in the place having power source but routing is complex.