This paper describes the design and development of grid edit platform based on MICAPS 3.2 system. First, the paper introduces the basic functions of Graphical Forecast Editor (GFE) being used in AWIPS system of NWS. Then it explains the secondary development ideas of MICAPS 3.2 system on the basis of the “addin tree” module and resource management design pattern. In addition, it provides the realization of interactive grid edit platform based on this framework. Finally, the paper presents the application of this platform in forecasting operations as well as the target of development in the future.