In accordance with the principle of centrality indices were selected, degree, closeness, node betweenness and flow betweenness, to progress the centrality of CAN (China's Aviation Network) and rank the degree of importance of nodes in CAN. The result shows that: in the four treatment results, the application of node betweenness index made the best; its centrality degree is 96.92%. And by comparing the centrality degree value based on different indices of the CAN network, got the major Chinese aviation network nodes are Beijing, Urumqi, Guangzhou, Shanghai and Kunming.