Abstract: Based on adaptability test of WOFOST crop model for maize production in Northeast China and using a 60-year climate scenario data (2011 ～ 2070) produced by BCC-T63 model, maize growth and yield change umder climate change scenario in Northeast China was simulated and analyzed. The simulation results show a shortened maize growth cycle. The growth cycle of medium-mature maize shortens by 3.4 days and that of late-mature maize shortens by 1.1 days. Yield of maize also decreases by different degrees; medium-mature maize decreases by 3.5% while late-mature maize decreases by 2.1%.