Abstract: To satisfy weather forecast for the Shanghai metropolitan services and fine forecasting business needs, a fine grid forecasting system was built in 2013 based on the B/S frame and learning from the NOAA GFE system and CMA MICAPS system, and has been put into the offcial forecasting operation since June 2014. The fne gridded forecasting system consists of three core modules:guidance, smart tools and text formatter. Currently, it has become a major platform of weather forecasting business in Shanghai Meteorological Bureau. The routine gridded forecasting products are released in hourly for 0~12 hours,in every 3-hour for 12~72 hours, and for townships towns, some important functional areas, and revised in time. This paper introduces the progress of the system construction and forecast business applications, then analyzes related issues in the routine operation.