I studied land use under the macroscopic background of rapid urbanization in P. R. China. Currently, there are many problems in land use which restrict the urbanization development. Therefore, I hope to discover existing problems, find out the dynamic law of land use, analyze the affecting factors, and probe into the counter-measures and ways to prohibit the shortterm use and blind development in land use in the urbanization process. I analyze the relationship between construction land, macroeconomic indicators and social development. I mainly analyze data about construction land, GDP, fixed assets, industry, real estate, traffic, and more. I conclude by pointing out their interrelationships.