摘要：从大都市圈创新系统发展现状看，城市群在经济、技术发展中逐步形成空间层级结构，地理联系对区域空间格局有着重要影响。本文首先回顾了空间结构理论在大都市圈创新系统研究中的主要观点，提出“城市科技潜力”的概念；其次，介绍空间相互作用理论的主要模型——潜力模型，阐述其对大都市圈创新系统中城市科技潜力分析的适用性及扩展；再次，以长三角大都市圈为例，测算其中各城市的科技潜力并以此划分结构体系。实证结论与政策规划的差异显示，大都市圈创新系统层级应该是在市场力量支配下形成的，而非由特意的行政区划、政策规划所致。

Abstract: Based on the status quo of the development of metropolitan area innovation system, the urban agglomeration has formed a hierarchical structure and geographic accessibility produces material consequences for the spatial structure. Firstly, the main points about the spatial structure theory on the research of metropolitan area innovation system are reviewed, the conception of city technological potential is put forward. Seceondly, the key model of the spatial interaction theory, the potential model, is introduced and its applicability and extensibility to calculation of the city technological potential are explained. Yangtze River Delta is taken as a case to calculate the city technological potential and analyze the hierarchy accordingly. The difference between the case study and planning indicates that the hierarchy of the metropolitan area innovation system should be brought out by market rather than the result of administrative instrument.