经济学院知识库

建设全国统一大市场是构建高水平社会主义市场经济体制的必然选择，也是构建新发展格局的基本支撑和内在要求。我国各省份各地区之间存在由地方保护主义和行政壁垒造成的较为严重的市场分割现象，这种分割既降低了资源配置效率，又阻碍了经济循环。打破各地区的“以邻为壑”局面，充分发挥国内超大规模市场优势和内需潜力，建立要素充分自由流动的一体化市场，有助于在推进全国统一市场形成的同时加快构建双循环新发展格局。随着数字经济在我国经济建设和产业发展中的优势不断彰显，如何把握数字经济发展机遇，进一步加速要素与商品流通，打破市场分割，消除区域市场壁垒，推动全国统一大市场建设是我国当前面临的重大现实问题。因此，数字经济下全国统一大市场建设将走向何条道路，以及数字经济如何影响全国统一大市场建设的机制路径值得深入探究。

在已有研究基础上，本文以2007—2021年中国除港澳台地区和西藏的30个省份8种商品零售价格指数为基础，对国内市场整合程度进行测算，并构建数字经济发展水平指标体系和熵值法赋权计算出各省份数字经济发展水平，运用多种计量方法实证检验数字经济对于全国统一大市场的影响及作用机制。研究发现：（1）数字经济的发展能够促进全国统一大市场建设，且全国统一大市场建设在时间上存在着动态“依赖性”；（2）数字经济通过优化营商环境和提升区域创新水平推进全国统一大市场建设；（3）数字经济发展水平与全国统一大市场之间呈现非线性关系；（4）全国统一大市场建设具有正向的空间溢出效应；（5）数字经济对全国统一大市场的影响存在负向的空间溢出效应。基于以上发现，本文提出了加强数字基础设施建设、鼓励跨区域交流合作和加大科技创新投入等政策建议，实现以数字经济发展推动全国统一大市场建设。

It is an inevitable choice to build a high standard market system and a high level socialist market economy system, and also the basic support and inherent requirement to build a new development pattern. It is also the fundamental support and internal requirement for creating a new development pattern. In the process of building a unified national market, there exists a significant market segmentation phenomenon among provinces and regions, caused by local protectionism and regional barriers. This segmentation not only reduces the efficiency of resource allocation but also hinders economic circulation. Improving resource allocation efficiency, accelerating the diffusion of technology, breaking the situation of "beggar-thy-neighbor" among regions, fully leveraging the advantages of the domestic ultra-large-scale market and the potential of domestic demand, establishing an integrated market with free flow of factors, will help accelerate the formation of a nationally unified market while promoting the establishment of a dual-cycle new development pattern. With breakthrough developments in digital technologies such as big data, artificial intelligence, and the Internet of Things, the advantages of the digital economy in China's economic construction and industrial development are increasingly evident. Leveraging its unique strengths, the digital economy becomes a crucial driving force to expedite the construction of a nationally unified market. How to seize the opportunities for the development of the digital economy, further accelerate the flow of factors and commodities, break market segmentation, eliminate regional market barriers, and promote the construction of a nationally unified market is a significant current challenge in our country. Therefore, it is worth delving into the path that the construction of a nationwide unified large market will take under the digital economy, as well as how the digital economy will impact the mechanism and pathway of the construction of a nationwide unified large market.

Based on existing research, this paper estimates the degree of domestic market integration based on 8 commodity retail price indices in 30 provinces of China except Hong Kong, Macao and Taiwan, and Tibet from 2007 to 2021. The study found that: (1) the development of the digital economy can promote the national unified large market construction, and the nation has a dynamic "dependence" in the construction of the unifying large market in time; (2) the digitalized economy promotes the nation's united large market building by optimizing the business environment and upgrading the regional innovation level; (3) the level of digital economy development and the country has a nonlinear relationship; (4) the nation had a positive spatial flooding effect on the building of the single large market; and (5) there was a negative influence on the national integrated large market. On the basis of the above findings, this paper put forward policy proposals such as advancing the construction of digital infrastructure, encouraging cross-regional exchanges and cooperation and increasing scientific and technological innovation inputs, to the development of the digital economy to promote the nation's unified large market construction.