Climate is one of the main factors affecting agricultural production. Climate change effects on food productions depend on different climatic zones. Rice is one of main food crops in China. It is of theoretical and practical significance to study the relationships between rice yield and major climatic factors in different climatic zones. Based on the grey system method,this study investigated the relationships between rice yield and climatic factors during rice growth season in three climatic zones in China,i. e. subtropical,subtropical and warm-temperate transition zone,warm-temperate zone,and predicted rice yield trends in the future. Three provinces,i. e. Fujian, Jiangsu,and Heilongjiang are selected as typical regions for the three climatic zones,respectively. The results showed that,during rice growing season from 1986 to 2015,regional climate change in Fujian and Jiangsu provinces showed becoming warm and dry tendencies,while in Heilongjiang,there was no significant change in relative humidity. Significant correlations existed between precipitation and air temperature with rice yield in the selected provinces,precipitation was the predominant factor in rice productions of Fujian and Heilongjiang provinces,while average air temperature in that of Jiangsu province. Based on ARIMA model,rice yield will tend to increase stably in the next five years in the selected regions.