Underground space of central area is in the closed rock system. And there are many differences between underground and ground buildings in design and form. According to the f ive elements of urban images identif ied by Kevin Lynch, and by comparing the ground buildings and urban design method, this paper focus on studying the urban design method of double-decker city in central area in order to eliminate the lost feeling in underground street and enhance the systematic development of underground space. Then it proposes that underground space design should correspond to the ground city including “areas: theme design for space partition”, “nodes: underground space nodes creation”, “mark: peak point and center of underground space”, “boundary: interface design of underground space” and “Path: guiding system and visual system” to form stereoscopic correspondence for underground and ground space, build up the complete “double” city image system, as well provide services for the whole city.