A grinding apparatus (100) includes: a rotating grinding tool (102) for grinding a workpiece (101) immersed in a cooling liquid (106) vibration generating mechanisms (107a) to (107f) for applying vibrations to the cooling liquid (106) and generating cavitation and a controller (108) for causing the vibration generating mechanisms (107a) to (107f) to generate the cavitation when the rotating grinding tool (102) is operated. The controller (108) turns on/off the vibration generating mechanisms (107a) to (107f) and adjusts amplitudes of the vibrations of the cooling liquid (106) generated by the vibration generating mechanisms (107a) to (107f) depending on a region in the workpiece (101) to be machined and one out of a plurality of machining steps to be performed.
