A work robot includes a multi-joint type robot arm and an actuator configured to drive each joint of the robot arm, and corrects a designated target position by a correction parameter to operate the robot arm. The correction of the target position is performed by setting multiple work points in a movable area of the robot, setting a correction parameter in which a spatial coordinate value and a correction value are associated with respect to the set multiple work points, and reflecting the set correction parameter on the target position.