Flood, is a kind of regional easily-occur natural calamity. It is important that people utilize non-structural measures for disaster-prevention and disaster-salvation. The pilot plant lies in Binjiang River Catchments, which is a branch of Zhujiang River (Pearl River) Guangdong Province China. The information will be extracted from remotely sensed TM images to plan flood risk area, and integrate meteorological data to divide the pilot plant into sections, quantify the flood risk degree to lives, belongings and environment in every sub-area. At last we will make a flood risk-planning map.