The invention discloses an electro-thermal combined heat cycle aging method, device and equipment and a storage medium. The method comprises the steps that a cable for aging test is placed horizontally, and basic information of the cable is collected; thermal capacitance and resistance data of each layer of the cable is calculated according to the basic information, a thermal circuit model is established, and the surface temperature of the cable is calculated by substituting the thermal capacitance and resistance data into the thermal circuit model; and a current value of the cable at a presettemperature is calculated according to the surface temperature, and the cable is tested in the current value. Basic information of the cable for aging test is collected, the thermal circuit model isestablished according to the basic information, and electro-thermal test is implemented via the model; and thus, electro-thermal combined heat cycle test is simpler, and obtained test data is more reliable.