Northeast China is one of the highest latitude areas in China, so the low temperature disaster during the maize growing season was the main agro-meteorological disasters which affected the maize production in Northeast China. Crop models can numerically simulate the relations between the important physiological and ecological processes of the crops and meteorology and soil, and reproduce crop growth processes. Therefore, based on the suitability test of WOFOST model in simulating the growth of maize in Northeast China, the paper analyzed the influence of the fluctuation of temperature on maize yields in recent 46 years in Northeast China, results showed that there was the same trends in the fluctuation of maize yields in Heilongjiang, Jilin and Liaoning, the fluctuation decreases with the increase in years, the largest fluctuation occurred in Heilongjiang province, with the value ranging between -20%-12％,and smallest fluctuation occurred in Liaoning province, with the value ranging about -15%-8％.