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文章在三驾马车分析的基础上提出了“高车驷马”对区域经济拉动贡献的估计式，结合江苏省区域性竞争型投入产出表，首次拆分编制了区域非竞争型投入产出表。紧扣产品价值的国内国际构成，按照消费主体、投资主体和外部需求主体对国内生产总值的购买衡量各自对国民收入的贡献，进一步扩展了“三驾马车”的测算方法，得到了与支出法相一致的对GDP贡献的精确估计。,Based on the analysis of the three carriages,the paper proposes the estimation mode of the contribution of“high carriage with four horses”to regional economy. Combining with the regional competitive input-output table of Jiangsu Province,the paper splits and compiles the regional non-competitive input-output table for the first time. Focusing on the domestic and in-tational composition of product value,the paper measures the contribution of consumption sub-jects,investment subjects and extal demand subjects to national income respectively. The measurement method of“the three carriages”is expanded,and an accurate estimation on GDP contribution is achieved,which is in line with the expenditure method.