Abstract: According to the characteristics of emergent public health event，the paper has designed a mobile Geographic Information System（GIS） based on Personal Digital Assistant（PDA）.The system integrates the technologies of GPS，GSM and GPRS，and it can instruct healthy workers to make epidemiology investigation.At the same time，the system can implement the functions such as data computation，statistic analysis，spatial analysis based on data collection.Thus，when public health emergencies break out，it can help to configure social resources more reasonable，support decision making much more scientific，and take reaction in time.The system runs steadily and powerfully during working.

摘要： 针对公共卫生突发事件需要应急反应等的特点，研究了以掌上智能终端（PDA）为开发平台，集成GPS、GSM、GPRS等技术，实现一个面向公共卫生突发事件的地理信息系统（GIS）。探讨了一些关键技术，如GPS与WINCE的接口，地图数据的动态装载等。该系统可以指导卫生人员进行流行病学调查，同时可以对现场采集到的调查数据进行录入、存储，并实现数据计算、统计分析和空间分析等功能。有助于在公共事件突发时，合理配置社会资源，为领导层决策提供科学依据，实现快速应急反应。在实际应用中取得较好的效果。