Abstract: Based on the theory of trend and position of niche, the theory and model of land use were discussed. The general niche of land use was the capacity of a kind of land use taking over the new environment. Theoretically, land use change was subject to the general niche of land use, but in fact, land use change was subject to the economic niche. In order to achieve the reasonable land use, the general niche had to be regulated. The key to regulating the general niche of land use was that the ecological efficiency and social efficiency were to be quantified. The objective of regulating the general niche of land use is to achieve the most efficient utilization of land by collaborating the economic efficiency, ecological efficiency and social efficiency of land use and adjusting the structure of land use.