To improve convenience in use of a laser marking apparatus that performs marking on a workpiece to which an alignment mark is affixed. The laser marking apparatus includes a setting section, a second IF section, a movement amount monitoring section, and a marking control section, and the setting section causes a display section to display a setting-assist image, which visually indicates the alignment mark on the flexible workpiece and a trigger delay, and receives a user input for setting the trigger delay in a state where the setting-assist image is displayed.