Abstract:The urban agglomeration is a city group of highly integrated and regional co-coordinating, which has experienced four extension processes from the city to metropolitan area, metropolitan circle, urban agglomeration, then to metropolis. Urban agglomeration is the main land of One Belt And One Road（OBAOR） where the world economy focus will transfer to, the main part of the new urbanization, and the most dynamic core area with the highest potential in the economic development pattern today and future. But a series of“city disease” should be solved, such as“arbitrary range, strive for grandiose projects, spoil things by excessive enthusiasm, out of thin air, knock together”, et al. These problems embodied in the following forms: the strategic position of urban agglomeration has been exaggerated overvalued, appeared“only group theory” in the new urbanization; spatial scopes of urban agglomeration expand excessively, and violate the basic purpose of urban agglomerations for state construction; urban agglomeration scopes depend too much on subjective will, and break away from the basic stand of urban agglomerations; the choice of cultivation of urban agglomeration makes endless concessions to local interests and affects the nation’ s overall strategic security structure; and urban agglomerations become a sensitive area and“problem” area that ecological environment problems centralized in, such as fog and haze. To solve these problems, we suggest that selecting urban agglomeration should be in accordance with the scientific standard and objective law and cultivating urban agglomeration step by step, and scientifically recognizing and understanding the objective standards and laws of nature on urban agglomeration development; distinguishing the essential difference between urban agglomeration and city cluster, avoiding confusions among them in government documents and academic research; cultivating China’ s urban agglomeration in large, medium, and small gradient scientifically, and constructing five big national-level urban agglomerations, nine medium regional-level urban agglomerations, and six small local-level urban agglomerations; making urban agglomeration planning adaptive to the environmental resource bearing capacity; innovating public finance system and public fiscal reserve mechanism of urban agglomeration; playing the significant role of market mechanism in urban agglomeration development, and guiding urban agglomeration comply with the new normal of economic development to realize healthy and stable development.