To enable a housewife having poor flood circulation to easily wash rice without wetting hands in cold water in winter.

A rotary guide plate 50 which rotates around a center ring bearing hole 16 of a cylinder through a planetary rotation device by rotation transmission of a center ring 30 is provided, and angle shape stair-like blades which rotate with the rotary guide plate 50 to revolve while rotating, and which are freely movable to play in vertical directions are formed. One or plural rotary brush(es) 01 integrally installing a brush at a lower end part is contained in a rice washing chamber 11 in a cylinder assembly 10 comprising an outer cylinder 13, an inner cylinder 14, and a drain bottom plate 12.