The present invention relates to a data processing apparatus provided with a multi-graphic controller and a data processing method using the data processing apparatus. A data processing apparatus of the present invention comprises a first graphic controller 10a and a second graphic controller 20 for processing and displaying inputted image data; and a control unit 50 for distributing the image data in consideration of data processing capabilities of the first and second graphic controllers 10a and 20. According to the present invention, there is provided a data processing apparatus and methodcapable of simultaneously using a plurality of graphic controllers, so that data processing speed can be improved. Image data are appropriately distributed, whereby the efficiency of data processing can be enhanced. Since the number and type of graphic controllers being operated are adaptively changed depending on a system state and the processing amount of data, it is advantages in that the efficiency of data processing and prevention of power consumption can be achieved at the same time.