Disclosed is a method for correcting teaching points for a welding robot. The method for correcting teaching points for a welding robot having a touch sensor, comprising the steps of mounting a workpiece to a welding jig; establishing at least one teaching point between an initial welding point and a terminating welding point; touch-sensing the workpiece at a point corresponding to the established teaching point through the touch sensor; identifying a point detected by the touch-sensing; and obtaining a new teaching point based on the difference between the established teaching point and the detection point. With these steps, the teaching points are correctly updated by a touch sensor tracking without an additional equipment for optional sensor tracking, such as laser sensors, arc sensors, etc., thereby performing the welding operation along the correct welding path.