首先，对生产性服务业与城市服务功能的内在关联进行了理论分析。其次，以生产性服务业作为中心城市服务功能的重要载体为切入点和研究主线，分析了北京的服务功能，并分别与上海、香港的服务功能进行了比较。研究认为北京的服务功能具有显著的管理控制和创新功能特征，上海和香港的服务功能则是依托区域经济中心地位，由市场机制作用自发产生的商贸物流中心、金融中心和商务服务中心功能。北京与上海、香港应优势互补，共同打造我国产业升级的高端生产性服务引擎，引领国家价值链建设。
Firstly，develops theory analyses on the inherent relevance between producer services and urban service function. Secondly，taking the perspective of producer services is important carriers of service function of center city as thread，analyses service function of Beijing and compares with the service function of Shanghai and Hong Kong. The study results as follows. The service function of Beijing characters notably as controlling and administering，and innovating function，while the service function of Shanghai and Hong Kong are mainly circulating marketing center，financial center and business servicing center arising from regional economic center under the function of marketing mechanism. Beijing，Shanghai and Hong Kong should mutually constitute the strategic service engine for industrial upgrading in China in complementation and lead the national value chain.
