(A transportation network is an organism composed of nodes, points and edges. In order to evaluate the connectivity function of the network more comprehensively, it is not only necessary to analyze the influence of the number and orientation of edges on the connectivity, but also the influence of nodes and points on the connectivity of the network. On the basis of analyzing the existing transportation network connectivity schemes, this paper proposes a topology connectivity evaluation scheme, which uses the average value of non-adjacent node, point-to-node, and point-to-point connectivity to measure the connectivity of the network.)