Disclosed are a robot system control method and a device therefor. The method for controlling a robot system according to an embodiment of the present invention comprises the steps of: initialising a master controller by using a boot loader provided in the robot system; executing runtime by loading runtime execution code stored in a storage area of the master controller; and loading and executing an application program stored in the storage area of the master controller. The embodiment of the present invention allows an application program for implementing the functions of the robot system to be managed relatively efficiently.