Base on the needs of the refinement forecast products and transmission system, the design, functions, and application of the Prefecture level Weather Forecast Production and Transmission System are described. The system was developed under the environment of PowerBuilder 7.0 and Windows 2000 operating system in PowerScript visual programming language. It consists of three subsystems (the human computer interaction, the forecast automatic transmission, and forecast check), can made various forecasting service products, such as the refinement forecast, short time forecast, forecast score, urban area forecast, peak hour forecast, and so on. The forecasts can be found on the local server at any time and can be uploaded to the provincial bureau manually or automatically. The system is a reliable and efficient forecasting platform for forecasters.