改革开放以来,我国居民的收入逐步提高,生活水平有了很大的改善但与此同时,收入差距也在逐渐拉大甚至悬殊,成为困扰我国改革和发展的一大社会难题,并直接影响着社会主义和谐社会的构建2003年,世界银行对中国经济改革发展所作的一份研究报告,对1990年—1999年的收入差距因素进行了分解,认为 Since the reform and opening up, the incomes of our residents have been gradually raised and living standards have been greatly improved. However, at the same time, the income gap is gradually widening or even widening. This has become a major social problem that has troubled China’s reform and development and has a direct impact on Construction of a Socialist Harmonious Society In 2003, the World Bank made a research report on China’s economic reform and development and decomposed the income gap between 1990 and 1999. They concluded that