Abstract: The purpose of this paper is to explore the role of different scale enterprises in regional economic development. For this reason, based on the 2001—2016 China Industrial statistical yearbook, with the help of Lee et al., (2013) analysis framework, this paper tests the different roles of largescale industrial enterprises and small and mediumsized industrial enterprises in the regional economic development. The results show that: (1) Compared with small and mediumsized enterprises, large enterprises are more conducive to promoting regional economic growth and mitigating regional economic fluctuations. This positive effect has a typical threshold effect, which will be further enhanced by the scale expansion of large enterprises. (2) The development of different scale enterprises at the same time is conducive to regional economic stability, but the uncoordinated development between largescale enterprises and small and mediumsized enterprises in China has significantly inhibited the further growth of regional economy. (3) In terms of scale, there is a threshold ratio between large enterprises and small and mediumsized enterprises in China. Beyond this ratio, the economic growth effect and economic stability effect of large enterprises and small and mediumsized enterprises will be enhanced. It is of vital practical significance for the regional economic development of our country to do well in the development of largescale enterprises and invigorate the ecological construction of enterprises.

Key words: large enterprises , SMEs , economic growth , economic fluctuations

摘要： 本文基于2001—2016年《中国工业统计年鉴》，借助Lee et al,（2013）分析框架检验了我国大型工业企业和中小型工业企业在地区经济发展中的不同作用。研究表明：（1）大型企业相对于中小型企业更有利于促进地区经济增长和缓解地区经济波动。这种积极作用存在典型的门槛效应，将因大型企业的规模扩张进一步增强。（2）同时发展不同规模企业有利于地区经济稳定，但是我国大型企业和中小型企业之间发展不协调显著抑制了地区经济进一步增长。（3）在规模上我国大型企业与中小型企业之间存在一个门槛比例，超过这一比例，大型企业和中小型企业的经济增长效应和经济稳定效应都会得到增强。抓好大型企业发展和搞活企业生态建设对我国地区经济发展有着至关重要的现实意义。

关键词: 大型企业 , 中小型企业 , 经济增长 , 经济波动