As a country's brand-new geographical unit in global competition and international division of labor, urban agglomeration is the product of China's new industrialization and urbanization in a higher stage, as well as the main battlefield of the "One Belt and One Road" project. Meanwhile, the development of urban agglomerations dominates not only the economic arteries, but also the future of China's new urbanization. Hence, it is of great strategic significance to promoting China's new urbanization and socio-economic development. However, a series of problems have emerged in the selection and cultivation process of China's urban agglomerations, which needs appropriate technological paths and plans to facilitate the healthy development of China's urban agglomerations from the scientific point of view. Therefore, the "High-Level Forum on China's Urban Agglomeration Development", jointly organized by the Geographical Society of China, the China's City Forum of Hundred Experts, and the Institute of Geographic Science and Natural Resources Research, CAS, was held in Beijing on December 20, 2014. After a series of heated debates, contention and discussion, nearly 100 experts attending the forum agreed that: (1) urban agglomeration plays an important role and dominates China's new urbanization. The research and development of urban agglomerations is a complex scientific issue and a very long process, as well as a natural process which cannot go against the objective laws; (2) there is a fierce debate and discussion on the basic connotation and standards of spatial recognition range, the benefit and value orientation are different at the policy level and academic level; (3) during the selection and cultivation process, "urban agglomeration disease", such as indiscriminating enclosure, unlimited sprawl, spoiling cities by excessive enthusiasm, create something out of nothing and throwing cities together in groups, should be solved as soon as possible; (4) different organization plans for the future spatial pattern of China's urban agglomerations are forming; (5) distinctive development patterns and problems do exist among urban agglomerations with different development levels, for example, the collaborative development optimization mode of Beijing-Tianjin-Hebei urban agglomeration, the expansion mode of the Yangtze River Delta urban agglomeration, the parallel development mode of the Pearl River Delta urban agglomeration, the spatial integration mode of Central and Southern Liaoning urban agglomeration, the intersecting parallels ("＃") space pattern of Harbin-Changchun urban agglomeration, the strategic integration mode of Central Plains urban agglomeration, and the balanced organization mode of Guanzhong urban agglomeration.