Abstract: This study elaborates the framework, main functions, technical scheme of intelligent correction rules and application effect of the smart grid meteorological forecast system. The system adopts C/S structure and is developed based on the framework of MICAPS4 platform. It consists of six modules: data interface, weather analysis module, grid element forecast module, disaster weather forecast module, integrated forecast product release module and monitoring module. It is characterized by strong operability, openness, and expansibility. In July 2017, the system was fully deployed and officially put into operation in Shaanxi Meteorological Observation and 11 local meteorological stations. In this way, the effect of simultaneous display and real-time update of the weather forecast is realized, and the goal of “one net” is achieved, which effectively supports the grid forecast operation in Shaanxi.