This paper proposes the communication system which is constructed image monitoring together with data examined. This system is mainly applied to detect and pre-warm the hillside calamity. Firstly, set up various inducting installations on the monitored hillside. After the examined data are digital coded, these installations will reveal these data by the way of highly brightened LED lights. On the other hand, remote receiver will focus on this monitored hillside with HD CCD camera. Thus, not only the situation of the target hillside will be fetched well via the LED lights, but also the result inspected will be fully comprehended when the data is decoded. The method and device that this research institute offers will replace recent measure equipments installed in slippery district, either wired or wireless communicator will be no need any more. This communication system gathers the data surveyed in target region and passes the image figures, which are light-arranged already, to distant device. The function of Monitoring & Communication is thus finished. Is equal to this system improves the function of video camera from a simply image monitoring to materials transmitting and communicating. It will be more convenient to build the hillside measure equipment, and simplify the monitoring system, that can save more expenditure. To enable this system operating rapidly, FPGA in hardware circuit is chosen and to decode the LED light symbol to make the data among images be understood quickly.