针对桌域网这一新型的网络结构，描述它根本区别于局域网和广域网的特点，并且从传统ＣＰＵ 总线的固有特性出发，分析为了实现桌域网而需变化到基于ＡＴＭ 连接时所需要的功能特性，指出ＡＴＭ 不能满足某些互连类型的要求。本文还分析了现有的桌域网ＷＡＮ接口方案的缺陷，提出了一种新型的接口模型。最后，本文从操作系统等方面分析了适应于桌域网环境的软件特性 Aiming to the new network structure of the desktop network, this new network structure is described, which is different from the LAN and WAN characteristics. Based on the inherent characteristics of the traditional CPU bus, the analysis needs to be changed to the functions required by the ATM connection in order to realize the desktop network Characteristics, pointed out that ATM can not meet the requirements of some types of interconnects. The paper also analyzes the defects of the existing desktop WAN WAN interface scheme and proposes a new interface model. Finally, this article analyzes the software features adapted to the desktop network environment from the operating system and other aspects