Abstract: Strong crosswind is one of the most serious disasters to railway (high speed rail) operation. There is large difference between the meteorological monitoring/forecasting wind and the one having acture effect on railway operation. According to the needs of the railway administration, using the basic principle of the railway meteorology and GIS spatial analysis and data fusion technology, we explored a meteorological monitoring and forecasting method for the railway crosswind, which includs the application of new gridded wind monitoring and forecasting products in high-resolution to fi ne road segmentation and the extraction of the underlying surface types. The wind speed revision technology considers the railway characteristics, the angle of the railway line trend and the wind direction. Besides, taking a typical viaduct on Harbin Dalian Passenger Dedicated Line as an example, we analyzed the applicability of meteorological wind data to high speed rail and the wind speed revision effect, also discussed the feasibility of this method proposed in this paper.