本文提出了一种公平分配代价的组播路由算法 DFC_ DCMT- -分布式公平分配代价的延迟受限组播路由算法 ,该算法在优化 tree- cost的条件下 ,能够计算出满足延迟限制的、各目的节点公平负担网络代价的点到多点的组播路由树 .本文还给出一种近似算法 ,可减少节点间交换的信息量 ,同时在一般情况下仍保持各目的节点公平负担网络代价 . In this paper, we propose a delay-constrained multicast routing algorithm based on the cost-fair multicast routing algorithm DFC_DCMT- - distributed fair allocation. This algorithm can calculate the delay-limited multicast routing algorithm under the condition of tree- Each destination node is fair to bear the point-to-multipoint multicast routing tree with the network cost.This paper also gives an approximate algorithm to reduce the amount of information exchanged between nodes, and at the same time still keeps each destination node fair to bear the network cost .