To provide a data processing device and a data processing method, with which copy management can certainly be performed.

In the data processing device and the data processing method, respective output terminals are controlled so that digital data is outputted via one designated output terminal in a plurality of output terminals in accordance with a content of copy restriction based on management data. Thus, the copy restriction can be performed only when there is the copy restriction based on the management data. Consequently, execution of unrestricted dubbing via the plurality of output terminals can previously be avoided. Thus, the data processing device and the data processing method, with which the data management can certainly be performed, are realized.