The recirculation grain dryer adopt the design of one integral multifunctional machine, using indirect hot blast heating,providing ultra high capacity that increase the area of the drying layer.It uses ingenious design to decrease the power that increase drying efficiency on the basis of uses less space and energy.It can reduce the crackle ratio of cereal effectively during drying to increase the quality of grains.The dryer can be used in drying different grains like paddy, wheat, bean, corn, sunflower seed, rapeseed, sorghum, seed and so on.