The Study on the Evolvement of Chinese Urban System between 1990 and 2004
分析了1990-2004年中国城市体系在人口分布、规模结构、空间格局等方面的演变，发现城市化快速推进，大城市和中小城市发展更快，但沿海与内陆差距扩大，人口与经济分布失衡阻碍了区域发展。
As a whole system which consists of cities of various scales and functions, the urban system is the most valid organized form to arouse the development of the certain region. This article analyzes the evolvement of Chinese urban system from followings: the population distribution of cities of various scales between 1990 and 2004, the evolution of rank-size structure in two years, the clustering classification urban system, and the present spatial structure and its development of population and economy values as well. We get the conclusions that the progress of urbanization is rapid while the cities over 1 million and under 200,000 have been developing more quickly; the developmental trend is from lower grade to upper grade, from lower level to high level, from disequilibrium to equilibrium. The gap between the coastal part and the inland part is getting big and will be bigger in the future. The disequilibrium of population-economy distribution has been blocking the development of backward area also blocking the development of advanced area eventually. The author adviseds that taking middle and western areas as breakthroughs then aiding them greatly; enlarging cities scale meanwhile economizing urban land.