提出了地理信息系统GIS 技术应用的四个阶段,在第四阶段(集成化阶段)的GIS 通过Web 服务技术实现了GIS 的互操作,使之能够与其他应用系统有效集成。然后通过实例分析并研究了基于Web 服务的WebGIS 在工程机械远程监控系统中的应用,以及其和企业现有业务系统集成的方法。 关键字:地理信息系统;Web 服务;远程监控系统;工程机械 Abstract: The application of GIS is divided into four phases. In the fourth phase, Web Services make the GIS realize interoperability and enable the integration with other information systems. Then the application of Web Service-based WebGIS in remote monitoring system for construction machinery and the method to integrate with other information systems are studied through a case. Keywords: GIS; Web Services; Remote Monitoring System; Construction Machinery