To monitor the ambient temperature in the electric oven, an NTC temperature sensor is usually installed in the body of the electric oven. The temperature sensor is mainly composed of an NTC thermistor, a stainless steel shell and a wire. The NTC thermistor changes with the temperature of the thermistor. The resistance value also changes, and then the resistance value is transmitted to the control circuit board to dynamically feedback the ambient temperature in the electric oven to control the working temperature of the electric oven and realize the intelligent management of the electric oven.