In order to evaluate and measure the node importance of space-based information network, based on the related theories of space-based information network and complex network, the classical characterization parameters of node importance are summarized and analyzed, and the evaluation methods of node importance of space-based network based on static and dynamic are emphatically combed and analyzed, and the main problems at present are pointed out and the development trend is prospected. The results show that the analysis provides a new idea for the research of node importance evaluation method and survivability of space-based information network.