模块化结构是形成大容量ＡＴＭ交换节点的最有效手段。本文提出一种分析模块化结构的ＡＴＭ交换节点性能的新方法。该方法通过引入虚队列考虑了相邻模块间的相关性。与计算机模拟相比，分析结果在整个负载变化范围内都有很高的准确性。方法适用于任意大小模块并采用输出排队和以Ｂａｎｙａｎ网为互连网的ＡＴＭ交换节点的性能分析。 Modular structure is the most efficient means of forming large-capacity ATM switching nodes. This paper presents a new method of analyzing the performance of a modular ATM switching node. This method considers the correlation between adjacent modules by introducing an imaginary queue. Compared with computer simulation, the analysis results have high accuracy over the entire load range. The method is suitable for any size module and uses the output queuing and performance analysis of ATM switching nodes based on the Banyan network.