To efficiently and surely remove substance adhered to the surface of a cultivation plate without damaging the plate.

An adhered substance remover 1 holds a cultivation plate with a pair of top and bottom feeding rollers 7A and 7B and removes substance adhered to the surface of the cultivation plate by rotary brushes 5 while transporting the cultivation plate. A cleaning means 6 is provided in the vicinity of the brushes 5 of the cleaner 1 to spray cleaning water to the cultivation plate. Since the means 6 is provided in the vicinity of the brushes 5, the substance adhered to the surface of the cultivation plate are blown out by the means 6 and the substance scrubbed by the brushes 5 are cleanly washed out and completely removed from the surface of the cultivation plate.