A control method, a control device, and a processor in a software defined network (SDN). In the control method, the control device, and the processor in the SDN provided by the embodiments of the present invention, location information of a network device registered in another control device in the SDN is obtained, so that a remote object proxy of the network device can be established according to the location information, and the network device is controlled using the remote object proxy. Therefore, it is unnecessary to send a control or operation request to device objects of all network devices in other control devices, thereby avoiding a step that the device objects of all the network devices in the other control devices receive a service control request and perform determining, and improving service processing performance.