Abstract: As a thematic Geographic Information System (GIS) for meteorological applications, MeteoGIS is set up originally based upon programming in C# on the Microsoft.NET platform for general purposes. A self-copyrighted and independent GIS kernel is developed to meet the urgent needs of GIS functionalities in meteorological disaster prevention and mitigation, not relying upon any commercial GIS system and its secondary development interface. The design situation, targets, significance and many key techniques are introduced. Also, its architecture, functions and applicable perspectives are illustrated briefly.