A laser machining apparatus includes: a laser beam emission device; a guide beam emission device; a scanner; a processor; and a memory. The memory stores a set of computer-readable instructions therein. The set of computer-readable instructions, when executed by the processor, causes the laser machining apparatus to perform: acquiring workpiece contour information specifying a contour of the workpiece; extracting a plurality of feature points from the workpiece contour information, each of the plurality of feature points being on the contour of the workpiece; generating a guide pattern indicating a setup position of the workpiece according to the plurality of feature points; and drawing the guide pattern with the guide beam by controlling the guide beam emission device and the scanner.