This paper proposes a new DEA method which can decompose the economic growth impetus completely in the framework of the DEA-Malmquist index method.Then it studies the structure,change phase and conversion mechanism of China's economic growth impetus empirically from 1978 to 2015.This method can ensure the accuracy of the contribution of the growth dynamic and Estimate the directed technical progress. The major conclusions are as follows:Firstly,capital investment is the dominant impetus for China's econom-ic growth and TFP is second impetus.The contribution of labor input is weak.Secondly,capital biased techni-cal progress alleviates the constraints of the law of diminishing marginal return,which leads long-term rate of return on capital to maintain a high level.Thus it speeds up the process of capital accumulation.In turn, it further strengthens the capital biased technical progress.Thirdly,under the guidance of the market-ignored e-ven anti-market policy,capital flows and the? regional differences have negative impacts upon the technical efficiency and scale efficiency,which eventually deteriorate the TFP's contribution to economic growth.%在DEA-Malmquist指数法的框架下,利用乘法结构的经济增长动力完全分解的DEA方法,对我国1978-2015年经济增长的动力构成、阶段变迁以及动力转换的内在机理进行实证研究,在保证增长动力贡献测度精度的同时,进一步估计技术进步的要素偏向.结果表明:资本投入是我国经济增长的主导性动力,TFP次之,劳动投入的贡献微弱;偏向于资本的技术进步缓解了边际递减规律的制约,引致资本回报率长期保持较高水平,从而加速资本累积进程,反过来进一步强化资本偏向的技术进步;在忽视市场甚至逆市场政策的引导下,资本流动、区域差异对技术效率和规模效率产生负面冲击,导致TFP对经济增长的贡献不断恶化.
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