The utility model provides a small -size domestic grain drier, by the feed inlet, conveyor, heating device, discharge gate and air convection device are constituteed. During the user will treat that the funnel of feed inlet is poured into to dry cereal, the volume of adjusting the regulating plate control cereal whereabouts of hopper below, to inspire leading -inly to the conveyer belt through the baffle of slope, the top of conveyer belt has one row of heating wire to heat cereal, the one end of desiccator has fan and air backflow pipe, increases the hot -air convection current in the desiccator, improves grain drying's effect. The utility model relates to a novelty, compact structure is simple, and it is not having under the sunning condition to be fit for ordinary peasant household, solves the problem of cereal sunning.