This article assesses the coordination between the construction land expansion and the population, economic development by introducing two indicators, population density and economic density of construction land. Based on the panel data from 31 provinces in China from 1999 to 2008, the article makes an empirical analysis of the regional differences in population density and economic density of the construction land and its convergence. The results show population density of the construction land in the south is higher than that in the North, wh...