Abstract: Nanning agrometeorological forecast system is developed by using SQL Server 2005, Microsoft visual studio 2005 and C# program language. All kinds of agrometeorological information such as agrometeorological background materials, agrometeorological knowledge and the previous agrometeorological service products can be introduced into the database of the system in any format. The materials in the database can be read, deleted, copied or replaced. The system also has other practical functions. Since the system is easy to be modified, it can be improved by using professional forecasters' experience. The system can help agrometeorological forcasters making high quality agrometeorological service products and improving their ability in agrometeorological forcast. The system also has popularization and application value.

Key words: Nanning, Agrometeorological forcast system, Agricultural weather service