Based on the time-series data from 1979 to 2012 and regional data in 2012 , the paper analyzed the ex-istence of Kuznets inverted U-shaped curve and the turning point of the relationship between the gap of urban and rural resident's income and economic growth using statistical and econometric methods from the national and regional aspects. The results showed that, from national aspect, the gap of urban and rural resident's income and economic growth showed a significant feature of inverted U-shaped curve, and hada positive correlation between them in the long term. The turning point of Kuznets inverted U-shaped curve appeared in 2007, 2008 and 2009. The income gap between urban and rural residentbegan to narrow in the following four years due to the economic development. From the regional point, the occurrence of inverted U-shaped curve turning point was when the per capita GDP reached 40000 yuan and total GDP was over 2 trillion yuan, but the turning point only appeared ina few eastern provinces and cities. The main conclusions were as following:the income gap between urban and rural resident and economic growthshowed the Kuznets inverted U-shaped curve and the turning point had already appeared in the national scope, which was not notable and the turning point existed only in a few developed provinces and cities in the regional scope. It indicated that there was great imbalance in the regional economic development in China. Therefore, in order to keep shrinking the gap between urban and rural resident's income with economic growth, ef-fective measures should be taken to promote the balanced development of regional economy.%文章利用1979~2012年的时序数据与2012年各地区截面数据,运用统计方法与计量经济方法从全国及各地区两个层面实证分析了我国城乡居民收入差距与经济增长之间的库兹涅茨倒"U"曲线及其拐点的存在性问题.结果表明,从全国来看,城乡居民收入差距与经济增长在长期呈现显著的倒"U"曲线特征,且二者之间存在正相关关系,库兹涅茨拐点已经在2007年、2008年及2009年这3年出现,此后连续4年城乡居民收入差距进一步缩小;从各地区来看,倒"U"拐点的出现时点为人均GDP达到4万元,GDP总额超过20000亿元,以此为标准,真正出现拐点的只是少数东部省市.文章主要结论是:从全国来看,城乡居民收入差距与经济增长之间存在库兹涅茨倒"U"曲线且拐点已出现;而从各地区来看,库兹涅茨倒"U"曲线并不显著,且倒"U"拐点只存在于东部少数发达省市,从而证实我国区域经济发展存在极大的不平衡.因此,若要保持城乡居民收入差距随经济增长而继续缩小的趋势,须采取有效措施促进区域经济的平衡发展.
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