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本文采用中国家庭追踪调查项目2010年、2012年和2014年的数据，基于相对分布非参数核密度统计方法研究发现：中国家庭收入极化呈现缓和趋势，不同年份之间家庭相对收入分布的变化特征存在差异，但总体上，经济增长是家庭收入分布变化的主要影响因素，其影响效应大于收入分配因素；同时，存在中等收入组家庭向低收入组和高收入组流动的现象，但向低收入组流动的情况更加普遍。未来要保持中等收入群体的持续稳定增长，必须构建有利于中低收入群体的经济增长模式和分配制度。
中图分类号：F328文献标识码：A
<<This paper uses the China Family Panel Studies data in 2010，2012 and 2014，based on relative distribution nonparametric kernel statistical method，it is found that the family income polarization showed a moderate trend，there were different characteristics in the relative income distribution between different years，but on the whole，the influence of economic growth on income distribution was greater than that of income distribution.There was a phenomenon that the middle income families flow to the high income group，but the middle income group flow to the low income group was more common.In order to maintain the sustained and steady growth of the middle-income groups in the future，we must construct the economic growth mode and distribution system which is beneficial to the low and middle income groups.
<<| Keywords： | Nonparametric Kernel Density EstimationRelative Income DistributionRelative Polarization IndexCFPS DataMedian |
