Method and device for controlling opening degree of gas stove ventilation door

The invention discloses a method and device for controlling the opening degree of a gas stove ventilation door. The method comprises the following steps of detecting the concentration of CO and CO2 generated during cooking with a gas stove, determining the current burning state of the gas stove according to the concentration of CO and CO2, and controlling the opening degree of the gas stove ventilation door according to the current burning state of the gas stove. By the adoption of the method, the opening degree of the gas stove ventilation door can be controlled conveniently and accurately.