An induction heating cooker includes an inverter for supplying a current to a heating coil, a control portion for driving the inverter, an electrostatic capacitance detecting portion for measuring electrostatic capacitance of a plurality of electrodes, and a boiling over detecting portion. The boiling over detecting portion reduces an output of the inverter from a first set value to a second set value after a sensed value of the electrostatic capacitance is within a first variation range (ΔV1) or more, and returns the output of the inverter to the first set value when a sensed value during a boiling over establishing period (T2) performed after the sensed value has reached the first variation range or more and falls within a second variation range (ΔV2).