Abstract: This paper presents a method of drying grain. It is using a method of grading automatical heating air flow in the low-temperature slow-velosity drying grain. Using this drying grain method,the air flow in the air duct of the drying machine may be in low or normal temperature automatically.But it always has the ability to carry on drying grain. Tie results of the experiments showed that under a definite wind-quantity ratio, we can save the energy consumption on the one hand, and avoid the germination damage of the rice grain on the other.The average energy consumption in the experiments is 840 k cal/kg water.It is 20%lower than the gemeral method of high-temperature rapid drying, but it takes longer time.