The invention provides an electric automobile storage battery voltage loss lifting device, and relates to the field of battery management devices. The electric automobile storage battery voltage losslifting device comprises a voltage boosting circuit, a voltage stabilizing circuit, a double-throw electric switch, a driving circuit, a voltage and current sampling circuit, an analog-to-digital conversion circuit, a controller circuit, a display circuit and a storage circuit, wherein an input end of the double-throw electric switch is connected with an output end of one battery; an output end ofthe double-throw electric switch is a voltage output end, and another end of the double-throw electric switch is connected with an input end of the voltage boosting circuit; an output end of the voltage boosting circuit is connected with an input end of the voltage stabilizing circuit; an output end of the voltage stabilizing circuit is connected with the voltage output end; a sampling end of thevoltage and current sampling circuit is connected with the output end of one battery; an output end of the voltage and current sampling circuit is connected with the analog-to-digital conversion circuit; an output end of the analog-to-digital conversion circuit is connected with the controller circuit; a control end of the controller circuit is connected with the double-throw electric switch through the driving circuit; an input end of the display circuit is connected with the controller circuit; and the storage circuit is connected with the controller circuit.