Meteorological disaster risk assessment is involved with multi source, multi dimensional, multi scale spatial data and socio economic statistical data. Key technologies of evaluating agriculture meteorological disaster risk with GIS MCE are introduced, including establishing evaluation criteria and weights by Delphi method, obtaining the spatial distribution of factors of the meteorological disasters by diffusing spatial attribute value and implementing evaluation by spatial overlay calculation. The results indicated that the technology of GIS MCE can combine multiple source information associating with agriculture meteorological disaster risk and achieve measurable results. As an example, evaluation on meteorological disaster risk with GIS MCE is shown in the article.