京津联合体的形成是首都经济圈和中国北方经济崛起的重要一步。本文以此为动机,全面分析了京津生产的现状及经济联合问题。研究中发现两市经济结构同构现象明显、经济联合无序而松散。针对造成问题的主要原因,文章遵循区域一体化和经济区理论与方法,提出京津经济协调发展的思路及对策。并在此基础上,进一步探讨了首都经济圈的腹地建设构想。 The formation of the Beijing-Tianjin Commonwealth is an important step toward the economic boom of the capital and the economic growth of northern China. Based on this motivation, this paper comprehensively analyzes the status quo and economic union of Beijing and Tianjin. In the study, the phenomenon of isomorphism of economic structure in the two cities was obvious, the economy unite and loosely. In view of the main causes of the problem, the article follows the theory of regional integration and the theory and method of the economic zone and puts forward the ideas and countermeasures for the coordinated economic development between Beijing and Tianjin. And on this basis, further explores the conception of the hinterland construction in the capital economic circle.