基于AutoCAD的二次开发工具Object ARX，Windows Socket机制和NET框架，开发了一个包装盒协同设计系统，系统支持在线和离线2种设计方式，具有设计者可离线、对网络传输效率要求低的特点。设计了系统的架构，讨论了实现过程中涉及的关键问题，并给出了相应的解决方案。

A packaging box collaborative CAD system was designed based on AutoCAD ObjectARX using windows socket mechanisms and .NET framework. The collaborative system can work in on-line or off-line condition; it has flexibility that collaborators may not be online real-time and it can work in net environment which has low transmission efficiency. The structure of the system is given, some key issues involved in implementation process were discussed and corresponding solutions were proposed.