中文摘要：

城市群的发展已成为我国的重要空间战略。科学评价与比较城市群内部各城市发展水平的变化趋势，对于促进城市群内各城市之间的协调发展以及城市群的健康发展都具有重要意义。从城市发展水平收敛性的角度入手，提出了城市发展收敛指数的概念，建立了城市发展收敛指数模型，并对吉林省中部城市群的长春、吉林、四平、辽源和松原5个中心城市1990年以来的发展状况进行了定量评价和比较研究。一是验证模型的可靠性，二是对城市群城市发展水平的收敛性进行实证分析，为城市群协调发展提供科学依据。

英文摘要：

The development of urban agglomeration has become an important space strategy of China. The scientific evaluation and comparison of urban agglomeration＇ s varying trend of internal urban development level has a great significance for the promotion of the harmonious development among cities and the healthy development of urban agglomeration. In view of this, this starts from the perspective of the convergence on urban development level then tries to put forward the concept and set up the model of urban development convergence index, makes a quantitative evaluation and some comparative studies on the development among Changchun City, Jilin City, Siping City, Liaoyuan City and Songyuan City Since 1990, which are five central cities in urban agglomeration in central Jilin Province. The reliability of the model is verified, then, the empirical analysis of the convergence on urban development level of urban agglomeration is made, and scientific basis for the coordinated development of urban agglomeration is provided.