Abstract：The pots experiments were conducted in 2013 for different water treatments under regulated irrigation, in which the water consumption rules were studied. The final results showed that the total water consumption depends on different growth stage, the order from large to small was: elongation stage>tasseling stage> filling stage> seeding stage. The sensitivity index (0.6727) at tasseling stage was the highest. When the water deficit treatment was below 60% of field water, the maize yield would be reduced. The relationship between yield and total water consumption could be described with a quadratic parabola, when irrigation water was 46.93kg/pot, yield was the largest. Finally got the maize water production function adopting Jensen model was established, it can provides a scientific basis for establishing reasonable irrigation system of maize under the regulated deficit irrigation.