It is a national policy to use the land rationally and efficiently. To develop and rehabilitate the land resources enthusiastically is very important for our country to release the intense supply and demand contradiction of land, to realize the homeostasis of farmland and to accelerate the sustained development of social economy and the sustained use of land resources. The analysis of supply and demand equilibrium of water resource in the item area is one of the important basic works and its aim is to solve the supply and demand problem of the water re-source and calculate the rebuilding project scale of water resource in the item area and compile a scientific, rational and flexible item plan for land and resources development and rehabilitation according to the local conditions such as natural resources, the use of land and the water resource.