Grain steaming machine

The utility model presents a grain steaming machine. The grain steaming machine comprises a water return tank and at least two grain steaming devices, wherein the water return tank is connected to a vapor collection port opening downwards; the two grain steaming devices are arranged in parallel in a vertical direction and arranged below the water return tank; each grain steaming device comprises a water supply pipe and a conveyor belt sequentially arranged from top to bottom, wherein a conveyor pathway is arranged on the upper surface of the conveyor belt, a steam pipe with steam holes is arranged in the conveyor belt, a water supply nozzle is arranged on the water supply pipe and communicated with the water return tank, a steam pipe is connected with an external steam generator and the conveyor belt is connected with a power mechanism in a drive manner. By virtue of the scheme, a traditional horizontal grain steaming machine is changed into a vertical multi-layer arrangement; by virtue of upward transpiration of steam, grains are heated layer by layer, the energy and water are greatly saved, the environmental friendliness is achieved and little space is occupied.