To provide a kitchen knife grinding tool for grinding a kitchen knife and removing stains and kitchen knife scars on a chopping board by providing a polishing material on the top surface of the grinding tool body and a fitting part having a slip prevention material in the bottom surface to be fixable to the chopping board or a sink.

This kitchen knife grinding tool is provided with a polishing material 4 such as sandpaper detachably in the bottom surface of the polishing tool body composed of a material such as a hard sponge, a long elliptical fitting part 3 in the center of the top surface, and a slip prevention material 4 such as a plate magnet or an extremely fine fiber on the top surface of the fitting part 3. This grinding tool is characterized in that the polishing material 4 such as the sandpaper is detachably provided in the bottom face of the grinding tool body 1 composed of the material such as the hard sponge.