A cooking appliance, comprising: a housing forming a cooking space , the cooking space being surrounded by a bottom surface , two lateral surfaces and a rear surface , the housing comprises an open upper surface and an open front surface; a door comprising a door upper surface part for covering the open upper surface of the housing and a door front surface part connected to a front side of the door upper surface part and for covering the open front surface of the housing ; a control board being accommodated in a space in the door front surface part ; a cooling fan for discharging air in the space where the control board is installed out of the door ; and at least one of a temperature sensor and/or a touch manipulation part that are installed in the door front surface part ; wherein the door front surface part is provided with a cooling hole that forms a passage opening the space in the door front surface part to an outside of the door , wherein the cooling hole is disposed at a lower end of the door front surface part ; wherein the temperature sensor and/or the touch manipulation part are disposed between the door upper surface part and the cooling hole ; characterized in that the cooling fan is: - disposed between the temperature sensor and the cooling hole , or - disposed between the touch manipulation part and the cooling hole , or - installed in a space being surrounded by the temperature sensor or the touch manipulation part and the cooling hole and the control board . a housing forming a cooking space , the cooking space being surrounded by a bottom surface , two lateral surfaces and a rear surface , the housing comprises an open upper surface and an open front surface; a door comprising a door upper surface part for covering the open upper surface of the housing and a door front surface part connected to a front side of the door upper surface part and for covering the open front surface of the housing ; a control board being accommodated in a space in the door front surface part ; a cooling fan for discharging air in the space where the control board is installed out of the door ; and at least one of a temperature sensor and/or a touch manipulation part that are installed in the door front surface part ; wherein the door front surface part is provided with a cooling hole that forms a passage opening the space in the door front surface part to an outside of the door , wherein the cooling hole is disposed at a lower end of the door front surface part ; wherein the temperature sensor and/or the touch manipulation part are disposed between the door upper surface part and the cooling hole ; characterized in that the cooling fan is: - disposed between the temperature sensor and the cooling hole , or - disposed between the touch manipulation part and the cooling hole , or - installed in a space being surrounded by the temperature sensor or the touch manipulation part and the cooling hole and the control board . - disposed between the temperature sensor and the cooling hole , or - disposed between the touch manipulation part and the cooling hole , or - installed in a space being surrounded by the temperature sensor or the touch manipulation part and the cooling hole and the control board . <EOS>