本文分析了 Diff Serv模型中提出的两种 meter算法 ,指出了令牌桶算法作为 meter算法所固有的缺陷 .在此基础上 ,提出了一种基于 Diff Serv模型的新型 meter算法 .该算法操作简单 ,与初始状态无关 ,并且很好地解决了权重因子的自适应取值问题 .因此它既能真实地反映 IP流的时间特性 ,又能容忍 IP流的短时间内的突发性 ,因而很适于作为Diff Serv模型中的 m eter算法 . This paper analyzes two kinds of meter algorithms proposed in Diff Serv model and points out the inherent defect of token bucket algorithm as meter algorithm.On this basis, a new meter algorithm based on Diff Serv model is proposed.The algorithm is simple , Has nothing to do with the initial state and solves the problem of adaptive value of the weighting factor well.So it not only can reflect the temporal characteristics of IP flows but also can tolerate the sudden burst of IP flows in a short period of time Suitable as m eter algorithm in Diff Serv model.