To provide a cutting machine capable of perfectly cutting a thick cutting object without shifting the cutting position from a predetermined position.

This cutting machine comprises a placing block 6 for receiving the cutting object 8, a cutter 14 having a cutter blade for cutting the cutting object 8, a driving part 34 for moving the cutter 14 in the X-axis direction and the Y-axis direction relatively with respect to the cut object 8, and a lifting part for moving the cutter 14 in the Z-axis direction. The depth of cut of the cutter blade is adjusted, and a cutting operation by the cutter blade is repeated a plurality of times.