To change real time a movement path of a robot during the performance of work.

In a system and a method for controlling the robot, the robot conducting the work is controlled on a working path between a prescribed start-of-work point and a prescribed end-of-work point. The system characteristically comprises an interrupt request signal generating part, which generates a signal for requesting the deformation of the working path of the robot, a host controller, which generates an interrupt signal including a prescribed change value for changing real time the working path of the robot according to the signal from the interrupt request signal generating part, and a robot controller which controls the operation of the robot in real time according to the interrupt signal from the host controller.