Induction cooker and power control method and device thereof

The invention relates to a power control method and device of an induction cooker. Different working states are started for different power voltage input ranges, and an alarm is given out if the voltage is too high to remind a user to alter the operation state and conduct outage operation; the constant power heating voltage range is set, products and assemblies especially internal electronic elements can be well protected, and the induction cooker can be operated at high efficiency according to different kinds of input voltage; and meanwhile, according to the power control device and method, the self-adjustment function is conducted according to the difference of the actual parameters and the set parameters, so that the induction cooker is operated precisely, the working mode and the cooking effect of corresponding gears are guaranteed, the voltage fluctuation use rate of the induction cooker is increased effectively, power operation accuracy rate is increased effectively, and thus the cooking effect is improved.