位置公共服务平台避免了传统LBS应用系统独立构建的方式，凸显了位置服务通用功能的共享，减少了计算资源的浪费，增强了该位置服务平台下应用系统的扩展性。本文从服务共享的角度提出了位置公共服务模式，探讨了位置公共服务平台的共享服务机制，并基于该平台设计了典型应用系统——灾害现场数据采集与决策支持系统。 Conventional LBS systems are mostly built individually, this ensures the integrity of application systems, but results in poor extension ability and waste of resources. Location Based Common Service (LBCS) platform avoid these disadvantages, enhancing the sharing of general service. This paper gave a discussion about service building and new service modes of Location Based Common Service. Under this service pattern, the system is divided into two parts under the new service pattern, LBS common service platform and expertise application system. At the same time, we gave a typical application system test, disaster site-data collecting and decision supporting system, which proved that the service pattern has a good prospect.