Provided is a method for guaranteeing the processing of a control operation in a wireless communication system, and the method is performed by a first machine-to-machine (M2M)/Internet of Things (IoT) device and can comprise the steps of: transmitting, to a third M2M/IoT device, a resource generation request for delivering a control message for directing a control operation of a second M2M/IoT device, wherein the resource generation request includes the contents of the control message, an indicator requesting a processing guarantee of the control operation or an identifier of the resource generation request; receiving a resource generation response to the resource generation request from the third M2M/IoT device; receiving a control result notification including a processing result of the control operation according to the indicator from the third M2M/IoT device, wherein the control result notification includes the identifier of the resource generation request; and checking whether the contents of the control message match the contents of the control result notification.