The invention discloses a control method for a cooking device, and the cooking device. The method comprises: obtaining voltage of a cooking device; obtaining first time between a rising edge zero crossing point and a falling edge zero crossing point of the voltage, and obtaining second time between the falling edge zero crossing point and the rising edge zero crossing point; according to the first time and the second time, obtaining voltage parameters of the voltage; and according to the voltage parameters, controlling the cooking device. For a condition that voltage in different regions is different, the control method for the cooking device can make the cooking device fully heat food under different voltage, especially for a region where voltage is relatively low, a problem that food cannot be cooked thoroughly caused by low voltage is prevented, and applicability of the cooking device is improved, so as to improve user experience.