An induction heat cooking device comprising: a top plate made of a material through which an infrared light is transmitted; a heating coil (2; 2a, 2b) for receiving a high frequency current to heat a cooking container placed on the top plate by induction; an inverter circuit for providing the high frequency current to the heating coil (2; 2a, 2b); an operation unit including an operation mode setting unit for setting an operation mode of the inverter circuit and a heating power setting unit for setting a heating power of the inverter circuit; an infrared sensor for detecting an infrared light that is emitted from a bottom surface of the cooking container and transmitted through the top plate; a control unit for controlling an output of the -inverter circuit, based on an output of the infrared sensor and a setting inputted to the operation unit; and a notification unit, wherein the operation mode includes a preheating heating mode for performing preheating before performing heating, wherein when the operation mode is set to the preheating heating mode, the control unit starts operation in a preheating mode for heating the cooking container with a first heating output corresponding to the preheating heating mode, and wherein when an increment of an output value of the infrared sensor is more than a first predetermined increment since the heating starts with the first heating output, the control unit causes the notification unit to notify a user that the preheating is finished, and the operation mode is changed to a waiting mode for performing heating with a second heating output that is lower than the first heating output, and characterized in that when the user sets a heating power by means of the heating power setting unit in the preheating mode, change to the heating power set by the user is prohibited, and wherein when the user sets a heating power by means of the heating power setting unit in the waiting mode, change to the heating power set by the user is permitted, and the operation mode is changed to the heating mode for performing heating with a third heating output corresponding to the heating power set by the user. a top plate made of a material through which an infrared light is transmitted; a heating coil (2; 2a, 2b) for receiving a high frequency current to heat a cooking container placed on the top plate by induction; an inverter circuit for providing the high frequency current to the heating coil (2; 2a, 2b); an operation unit including an operation mode setting unit for setting an operation mode of the inverter circuit and a heating power setting unit for setting a heating power of the inverter circuit; an infrared sensor for detecting an infrared light that is emitted from a bottom surface of the cooking container and transmitted through the top plate; a control unit for controlling an output of the -inverter circuit, based on an output of the infrared sensor and a setting inputted to the operation unit; and a notification unit, wherein the operation mode includes a preheating heating mode for performing preheating before performing heating, wherein when the operation mode is set to the preheating heating mode, the control unit starts operation in a preheating mode for heating the cooking container with a first heating output corresponding to the preheating heating mode, and wherein when an increment of an output value of the infrared sensor is more than a first predetermined increment since the heating starts with the first heating output, the control unit causes the notification unit to notify a user that the preheating is finished, and the operation mode is changed to a waiting mode for performing heating with a second heating output that is lower than the first heating output, and characterized in that when the user sets a heating power by means of the heating power setting unit in the preheating mode, change to the heating power set by the user is prohibited, and wherein when the user sets a heating power by means of the heating power setting unit in the waiting mode, change to the heating power set by the user is permitted, and the operation mode is changed to the heating mode for performing heating with a third heating output corresponding to the heating power set by the user.