Northeast region of China is an important base of rice production. The impact of climate change on rice yield is of important significance for national food security. In this paper, based on daily meteorological data from the future A2 and B2 emission scenarios (20112050),the impact of climate change in Northeast China over the next 40 years on the yield of rice was analyzed with the ORYZA2000 model developed by the International Rice Institute. The results showed that rice yield and total output might increase in the irrigated region under the two emission scenarios. The area suitable to grow crops can extend toward to northward. Rice yield will be higher at B2 scenario rather than that at A2 scenario. Carbon dioxide relative to the reference period may increase in northeast region, so do the overall precipitation, temperature and solar radiation. But precipitation in a single year may decrease. The advantageous aspect is that the crops and varieties can be introduced and thus have higher production. However,it should be warned that soil fertility may be declined since depletion of soil organic matter. The diseases and insect pests may occur with high frequency. The attention should be pained on soil test and fertilizer recommendation, and pest and disease monitoring and control,for guaranteeing rice prodcution.