Abstract: The suitability of meteorological conditions is related to the efficiency,cost and other issues of agricultural activities.In Hinggan League,the agricultural activities in rice production mainly include seedling cultivation,transplanting,and harvesting.Based on the influence of relevant meteorological factors on rice seedling cultivation,transplantation and harvest,a suitability calculation function for relevant meteorological elements was established using a fuzzy membership method.The weight of each influencing factor was determined through expert consultation.On this basis,utilizing rice growth observation data from 2010 to 2022 in Horqin Right Wing Front Banner,a comprehensive meteorological suitability model and classification index for rice seedling cultivation,transplantation,and harvesting in Hinggan League were developed.The results show that the comprehensive meteorological suitability for rice seedling cultivation,transplantation,and harvesting has been moderate or relatively moderate over the past three years.The meteorological suitability for rice seedling cultivation and transplantation varies greatly in different years,whereas the meteorological suitability for harvesting has changed relatively little.The models and classification indices align well with the actual rice production conditions in Hinggan League.When integrated with refined forecasts of temperature,precipitation,and other meteorological variables,these models can facilitate the prediction of optimal periods for agricultural activities.