An electric drive pump comprises a pump cover, a pump body, an impeller, a rear cover, a pump shaft, a motor part and an electric control unit. The pump cover and the pump body are fixed to form an impeller cavity used for containing the impeller. The pump body and the rear cover are fixed to form a first containing cavity used for containing the motor part. A rotor and the impeller can rotate. The electric drive pump further comprises an isolation sleeve dividing the first containing cavity into a stator cavity and a rotor cavity. The stator cavity does not communicate with the impeller cavity, and the rotor cavity directly or indirectly communicates with the impeller cavity. The stator cavity is closer to the pump shaft than the rotor cavity. A stator is arranged in the stator cavity, and the rotor is arranged in the rotor cavity. One end of the isolation sleeve is integrally arranged with the pump body or the rear cover, components are reduced, and meanwhile assembling is facilitated.