It is important for expanding the new space of regional development to identity new space. Based on the connotation and characteristics of the new space,the paper is divided into five steps to eventually identify three types of new space of regional development. First of all, identify the faster economic growth area; secondly, identify the power of the regional economic growth; again, determine the prefecture level as the basic unit of the new district development space; and then, analyze the carrying capacity of resources and environment for the development of new space; finally, determine with city or metropolitan area as the basic unit of the new space of regional development. In the future, the first generation of regional development space will focus on high-quality development, the second generation will focus on spatial structure optimization and industrial function improvement, and the third generation will focus on cultivating development capacity.