To provide a regenerative brake system of an electric vehicle employing a shunt motor capable of performing regenerative braking accurately in accordance with traveling conditions of the vehicle while sustaining stabilized performance constantly.

In the electric vehicle comprising a DC shunt motor 5 as a drive source and controlling motor torque by supplying currents to a armature side coil 51 and a field side coil 52 of the motor 5, amounts of currents of the coils 51 and 52 are measured when the vehicle is in travel and a regeneration current of the motor 5 is controlled based on the amounts of the currents.