介绍复杂网络的基本统计指标，包括点的度、最短距离、网络有效性和介数。在复杂网络理论的基础下，分析新建线路将给整体网络带来的影响，如度的增加引起网络抗攻击性的下降和介数增大引起级联失效现象的加剧，基于度和介数指标的统计来设计新建线路辅助评价思路。根据上海轨道交通2008年线网进行案例分析，统计网络的度和介数指标，说明新建线路应当避免在网络Hub节点换乘，并尽量避免同站多线换乘，从而达到均衡整个网络压力的目的。

This paper presents several statistical indicators of complex network. Based on the theory, the influence of new lines on the whole network was analyzed, such as decrease in network anti-aggression caused by increase in degree and intensified cascading failure phenomenon caused by increase in betweenness. A model about auxiliary decision for building new lines was designed by adopting statistics of degree and betweenness. Conclusions were reached according to Shanghai urban rail transit in 2008 that new lines should avoid crossing the hub of the whole network, and also that three or more lines should not converge into one station to balance the pressure in the whole network.