A device control method and system that sets a control setting through a user interface generated by using an XML (eXtensible Markup Language) document is provided. Operation control of a device is set through a user interface that is generated using an XML (eXtensible Markup Language) document. A user interface is generated for control settings of a device based on received first information, second information corresponding to control setting values is input through the user interface, and the second information is transmitted to the device and corresponding control settings of the device are set. Accordingly, operation control of the device can be controlled through a user interface by using a single standardized document regardless of the type of device.