and mutual benefit, symbiosis and common prosperity of all spatial units.Key words competition and cooperation; urban central area; shadow area; urban renewal1 引言特大城市的中心区形成往往具有复杂性，其发展状态在空间层面上并非由内向外地均质减弱，在紧邻发展核心的地带常会出现处于劣势的弱发展现象。
这些原本具有较好区位条件的发展阴影区，由于业态低档、建筑衰败、活力度低等问题牵制，将导致城市空间发展不平衡，造成城市土地低效利用。
而各类人流、物流、信息流不断朝着城市中心单向集中，也使得城市中心与周边地区无法形成良性的互动机制[1]。
为响应十九大以来所提出的城市高质量发展需求，挖掘城市空间发展的内在关联，促进城市中心区及阴影区形成高效的竞争合作关系，具有理论和现实意义。
在此背景下，本文以苏州市姑苏区25号街坊为例，分析其与城市中心的内在关联，并提出竞合发展的更新策略。
2 研究综述2.1 竞合关系“竞合”最早出现在企业发展领域，后逐渐进入经济摘要 随着人们对城市发展质量提出更高的要求，城市中心区内存在阴影区的现象日益被重视。
文章从竞合关系视角阐述中心区及阴影区的内在关系，分析苏州市姑苏区25号街坊现存的发展瓶颈。
不仅存在物质空间老化、业态服务低档、人群活力欠缺等内在问题，还存在与中心发展核心联系不足、互动受阻等现实因素。
基于竞合关系的认知，提出中心区协同阴影区的更新发展思路，为此类历史文化街区的提质升级提供借鉴，最终走向各空间单元合作互利、共生共荣。
关键词 竞合；城市中心区；阴影区；城市更新中图分类号 TU984文献标识码 ADOI 10.19892/ki.csjz.2023.23.34Abstract With the increasing higher requirements for the urban development quality, the phenomenon of shadow areas in urban central areas has been paid more and more attention. This paper expounds the internal relationship between the central area and the shadow area from the perspective of competition and cooperation, and analyzes the existing development bottleneck of No.25 Neighborhood in Gusu District, Suzhou. There are not only internal problems, such as aging material space, low-grade business services, and lack of vitality of the crowd, etc., but also some realistic factors, such as insufficient contact with the development core of the center and blocked interaction. Based on the cognition of competition and cooperation, this paper puts forward the idea of updating and developing the shadow area in coordination with the central area, which can provide a reference for upgrading the quality of this kind of historical and cultural blocks, and finally lead to the cooperation作者简介：陈欣然（1997—），女。
