Using 60 the ground meteorological stations observation data of Jiangsu province from 1961 to 2012 and data of RCP4.5 and RCP8.5 emissions scenarios simulated by RegCM4.0 regional climate model, the change trend of agricultural climate resources in recent 52 years of Jiangsu province was analyzed and the change characteristics in the future period(2015-2050) were forecasted. The result showed that: Nearly 52 years, the solar total radiation decreased by 2.78 MJ/m~2, the accumulated temperature increased in the case of ≥0 ℃, and the climatic tendency was 89 ℃ every ten year. Precipitation and reference crop evapotranspiration fluctuated significantly, the average precipitation in the 1970s and the average reference crop evapotranspiration in the 1980s were the lowest. Compared with the baseline climate condition (1961-2005), the accumulated temperature in the case of ≥0 ℃ and the sun total radiation increased in the two future climate scenarios. Precipitation in the most parts of the province increased in the RCP4.5 scenario and decreased in the RCP8.5 scenario. The reference crop evaporation in two scenarios showed the same trend. However, the water surplus-deficient in two scenarios showed a significant difference, and there was a significant water shortage in the RCP8.5 scenario in the north of Jiangsu province. These results can provide scientific guidance for the utilization of agricultural climate resources, agricultural production and layout in Jiangsu area.