Abstract: In a method and system for generating teaching data for robots, a plurality of virtual target points are disposed in the vicinity of each of target points allowable on design, where a tool center point of a robot is to be positioned. The virtual target points and the original target point are combined into "target points taken in a broad sense". Each of the target points taken in the broad sense is given as a point which has been confirmed as a tool-attainable point on an off-line teaching apparatus. When a necessary correction is made on-line to teaching data generated by the off-line teaching apparatus, including as data the target points taken in the broad sense, an operator can select a suitable point from the target points taken in the broad sense and carry out a process of correcting the teaching data, regarding the suitable point as being a starting point.