Study on the development and suggestions of urban agglomeration in the central region of Jilin Province

The development of urban agglomerations in developed countries have been successful, the economy of scale is very obvious. Based on the theory and Jilin city group's geographical characteristics , the Changchun City, Jilin, Siping, Songyuan, Liaoyuan, and Nong'an,Jiutai, Gongzhuling and Yitong are designated as the central city of Jilin Province. This paper will study the development status , the main problems and development of countermeasures of the central city group.