The present invention provides with a power saving method for the electrical heating food processing device of temperature-controlled, which applied the thermal sensor dynamic senses the temperature of the heater; and the microprocessor judges that whether the real-time sensed temperature signal is within the corresponding temperature interval, then deals with the data. The microprocessor judges that whether the continuous-time length of the corresponding temperature interval exceeds the preset time threshold on the basis of the judgment of the temperature interval. If does, reduce the temperature or shutdown the power, otherwise return to the normal working mode. It realizes automatically temperature reduction and automatically shutdown when the food processing device is unused. The temperature reduction automatically can reduce the temperature difference of the heater and the surrounding environment, which can realize the energy consumption reduction; the shutdown automatically can avoid energy wasting due to long period of empty load of the food processing device, which can realize the power saving.