On account of the inexpressibly complex features of the urban space network, the axial model analysis mechanism in space syntax is used to explore the inherent logic regularities of the urban space networkconfiguration. Through both quantitative and graphic qualitative descriptions of topological relations of urban space network and its functional attributes, the bottomtotop inherent regularities and toptobottom mandatory planning is further presented as well. With these, a platform is built for the studies of the unity relation of urban space network, thus the design schemes of urban designers can input positive, active and highly effective impetus with following with the systematicness and selforganization of urban space development.