The content and format of the sharing products are defined by means of the transportation meteorological information datasets. The Java Servlet technique is used to build a map service based on the GeoServer and the Tomcat platform specifically, which allows consumers to combine the map resources provided by the system freely to satisfy their needs for map service polymerization application. The GIS based system is finally accomplished through such functional modules as the jigsaw algorithm of traffic weather products, core GIS processing, XML parsing, etc., which can satisfy the requirements for transportation meteorological service and provide technical supports for the monitoring, analysis, and the sharing of forecasting products.