A robot program correcting apparatus, which displays three-dimensional models of a robot and a workpiece simultaneously on the screen of a display apparatus, and corrects an operation program for the robot, includes: a unit retrieving a robot operation program and a working position based on at least either a line or a surface computed from touchup points and on a touchup position or points representing a working position specified on the screen; a difference computing unit computing a difference between at least either the line or surface computed from the touchup points and at least either a line or a surface computed from the plurality of points as position information representing the retrieved working position; and a correcting unit correcting the robot operation program by computing the amount of correction based on the difference, thereby reducing the number of steps required when correcting the robot operation program.

 
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