改革开放以来，伴随着生产力的巨大发展，我国城镇人民生活水平大幅度提高。统计资料显示，全国城镇居民人均支配收入已从１９７８年的３４３元，提高到２００１年的６８６０元。与此同时，城镇也出现了一个占城镇总人口相当比例的弱势群体。他们难以维持基本生活的窘况与大部 Since the reform and opening up, with the tremendous development of productive forces, the living standards of our urban people have been greatly improved. Statistics show that the per capita disposable income of urban residents in China has risen from 343 yuan in 1978 to 6860 yuan in 2001. At the same time, a disproportionately large proportion of the urban population has also emerged in urban areas. They find it hard to maintain their predicament and most of their basic living