Electric heating equipment control method, device and system

The invention provides an electric heating equipment control method, device and system. The method comprises: obtaining the circulating water temperature of a current control period; determining the lowest temperature of circulating water corresponding to the current control period; and under the condition that the temperature of the circulating water in the current control period is lower than the lowest temperature of the circulating water corresponding to the current control period, starting the heating function of the electric heating equipment. The whole day can be divided into a plurality of control periods, the lowest circulating water temperature corresponding to each control period is determined in advance, starting control is executed according to the lowest circulating water temperatures of different control periods, personalized starting operation can be conducted according to the different control periods, and therefore the energy saving performance and the user comfort ofthe electric heating equ