PURPOSE: To simplify a plaster work by providing a plate equipped with a vibrator and a hopper charged with plaster materials so as to move up and down freely and dispatching plaster materials toward the front of the plate by rotating a spatula in the hopper.

CONSTITUTION: A plate 2 provided with a vibrator 1 is linked with a hopper 5 through a connector, and the plate 2 and the fixing chassis 10 of the body of the hopper 5 is so mounted that they are capable of raising and lowering against the chassis 12. Plaster materials such as mortar and others in the hopper 5 are dispatched toward the front of the plate 2 by rotating a spatula 8 provided to the inside of the hopper 5. Accordingly, the plaster materials can be plastered on walls automatically.