地震应急体系随着国家“十五”重大项目“中国数字地震观测网络”项目的验收初步确立，应急指挥系统建设逐步完善，视频会议系统在地震应急响应中发挥了日益重要的作用。本文简要介绍了视频会议系统的基本组成和关键技术，详细阐述了全国地震应急视频会议系统的网络拓扑结构、主要功能以及在地震应急中的实际应用情况。本文对将来地震应急视频会议应用模式的流程化、规范化有一定实际意义。

China earthquake emergency system has been basically established since completion of the China digital earthquake observation network project of the tenth fiveyear plan. With the development of the earthquake emergency and command system, the video conferencing system is now playing a more and more important role. In this paper, the basic makeup and key technologies of video conference system is introduced.Its network structure, main functions and the practical application in the earthquake emergency and command actions of China is expounded. The paper is useful for the standardization of further work in the application mode of the video conferencing system in practice.