Using CMIP5 multimode collection data, we analyze the climate change under different scenarios(RCP26,RCP45,RCP85) in Northeast China over the next 100 years from time and space distributions. The results show that under three emission scenarios, the temperature and precipitation during the 21st Century in Northeast China show a significant growth trend; at the medium and late stages, there is obvious increase with the increase higher in winter than in other seasons; under the RCP85 scenario, the warming is most significant,RCP45 follows,RCP26 the least; over years, the annual ranges of temperature and precipitation anomalies decreased and their spatial distributions show that the temperature increase distributions in various periods are basically consistent, gradually increasing from south to north; the warming is the smallest in the southern Liaoning and the most notable in the Daxinganling area; the distributions of temperature change rates under different scenarios are slightly different, with significant warming trends; the precipitation anomaly percentage has an increasing trend, with a meridional distribution of gradual increase from east to west; the rates of precipitation change are similar, presenting the characteristics of greater in South and smaller in north; the growth is most obvious in Liaoning,and relatively small in the western Heilongjiang.