Abstract:In order to reveal some characteristics of supernetwork, in this paper based on the small-world and scale-free model we put forward and established two kinds of supernetwork evolving model, and defined cross-degree which used to quantify the cooperation relationship of supernetwork nodes,finally we used the supernetwork evolving model to analyze scientific collaboration network of our department. The result show that for the supernetwork evolving model and the empirical analysis, the cross-degree is better that other network characteristics, can be used to analyze the cooperation relationship of supernetwork nodes in different levels, these results lay a foundation for further analysis of supernetwork and its application from the theoretical model.