利用2008年全国第二次经济普查数据和《2007年中国区域间投入产出表》中的数据，本文先后估算了中国服务业集聚的EG指数和地级及以上城市的市场潜能，然后以全国地级以上的城市为样本，通过加权的城市服务业EG指数，使用WLS线性回归的方法，实证检验了我国城市市场潜能与服务业集聚之间的关系。本文发现：（1）从行业集聚的角度看，中国服务业的整体集聚水平明显偏低；（2）整体而言，我国城市市场潜能与服务业集聚之间呈现正相关关系，同时城市第三产业比重和城市基础设施建设对服务业集聚的显著促进作用，城市规模对服务业集聚具有非线性关系；（3）市场潜能与服务业集聚的关系呈现区域差异，市场潜能对于中西部地区城市正向促进作用显著，而对于东部地区城市影响则不显著。

Using the data of the Second National Economic Census of China and the data of The Regional Input-output Table of China in 2007, we estimate the EG index of agglomeration of service industry in China and market access of prefecture level cities and above, then take the cities as the samples, through weighted EG index of urban service industry, empirically analyze the relationship between urban market access and services agglomeration with WLS regression method. We find: (1) From the perspective of industry agglomeration, the overall level of service industry in China is obviously low; (2) Overall, there is a positive correlation between the urban market access and services agglomeration in China, at the same time, the proportion of urban infrastructure and urban third industry specific gravity has a significant effect on the services agglomeration, while the services agglomeration has nonlinear relationship with the city scale; (3) The relationship between market access and services agglomeration presents regional differences that the urban market access has a significant effect on the cities in the Midwest, while the influence is not significant in the eastern region.