中文摘要：

1990年代以来中国城市贫困问题越来越突出。通过探讨中国城市贫困的标准和内涵，分析了中国城市贫困人口的组成结构及其动态变化特征，进一步描述了中国城市贫困人口的空间分异，并且按照城市贫困发生率划分为基本脱贫区、低度贫困区、中度贫困区、高度贫困区和剧烈贫困区五个区域，再从自然条件、经济发展水平、行业特征、受教育程度和就业机会五个方面解析成因。最后得出四个结论：一是我国城市贫困人口分布具有典型的地域特征，城市贫困发生率较高的为中部老工业基地和西部地区；二是失业人口是城市贫困人口的主体；三是城市贫困人口的结构性特征突出，该群体成为社会变迁中的被淘汰者；四是农民工成为新的城市贫困群体，城市越大农民工规模也越大。

英文摘要：

Since the 1990s, the problem of urban poverty has become more and more outstanding. Through discussing the standard and the meaning of urban poverty in China, this paper analyzed the composition of urban poor and the characteristics of dynamical changes. This paper also described the spatial distribution of China＇ s urban poor phenomenon. According to the incidence that urban poverty takes places, all the provinces of China can be divided into 5 parts： the generally getting rid of poverty areas, low poverty areas, moderate poverty areas, high poverty areas and severe poverty areas. The thesis studied the reasons from 5 aspects： Natural conditions, economic development, industrial characteristics, educational background and employment opportunities. Then we can get four conclusions at the end of the paper. Firstly, the distribution of the urban poor had the typical regional characteristics. The poor people mainly gather in the old industrial base of central areas and western areas of China. Secondly, the jobless people are a major component of urban poor. Thirdly, the structural feature of urban poor is prominent. The poor class is vulnerable to be eliminated by the society changes. Finally, rural migrant workers in cities become the new poverty-stricken group. The cities is larger, the scale of migrant workers is greater.