Abstract: The purpose of this paper is to propose a new solution for the WebGIS based on Flash technology.Along with the new version of Flash CS 3，ActionScript 3.0 is released，which is so powerful that it soon becomes the most popular programming language of Internet application.WebGIS is just a kind of Internet application and ActionScript 3.0 is used to develop a WebGIS application.The whole framework and the component of each class are analyzed and designed by giving an example application.Study shows that using Flash and ActionScript to develop WebGIS is a good approach and it shows good feasibility of superiority.This technology can improve the high-bandwidth requirements of traditional methods and enhance the efficiency of spatial analysis.This paper is just a primary research，and further study will be continued.

Key words: Flash, ActionScript, Web Geographic Information System（GIS）

摘要： 通过对Flash SWF文件和ActionScript 3.0编程语言的分析，将其应用于空间地理信息的Web发布，试图设计一种基于Flash的WebGIS解决方案，以改善目前WebGIS数据传输量大，带宽要求高的缺陷，并提高WebGIS的执行效率。通过应用实例开发运行，详细分析了利用Flash开发WebGIS的优越性与可行性，给出了详细的总体设计框架，并分析了其实现的关键技术。研究表明开发基于Flash的WebGIS配置简单方便，客户端也不需要特别的设置，又是直接利用已有的数据文件格式，还兼容原有的信息系统，是一种值得重视和深入开发利用的技术。

关键词: Flash, ActionScript, 网络地理信息系统（Web GIS）