A cooking device includes: first and second heating cooking units; a mode setting unit configured to set heating modes of the first and second heating cooking units; a receiving unit; a priority managing unit configured to store priorities which are given to the first heating cooking unit and the second heating cooking unit, respectively; and a power adjusting unit configured to adjust using power of a heating cooking unit to which a lower one of the priorities of the first heating cooking unit and the second heating cooking unit stored in the priority managing unit is given when the receiving unit receives a power adjustment request signal transmitted from a power controlling device. The priorities are different values for each heating mode.