The increase of constructed land, divided into residential and industrial land and transportation land, plays the important role for the decrease of cultivated land in China. The objective of the article is to set up the quantitative representation of constructed area distribution with inter-province related some factors to show the dynamic basis of land use change in China. By regression analysis, we discovered that the distribution of land magnitude of every sort and their sum correlate highly to the distribution of population and cultivated area per capita. The effect of population on the distribution of residential and industrial land is more obvious than that of transportation land, but the effect of cultivated area per capita on the distribution of transportation area per capita more than that of residential and industrial area per capita. The rate of residential and industrial area changes with inter-province is mostly proportional to the rate of population’s changes.