The utility model discloses an electric vehicle double speed motor which comprises a motor, a shaft, a bearing, a stator and a rotor. Rotor output is respectively in transmission connection with a forward transmission chain and a reverse transmission chain. The forward transmission piece of the output end of the forward transmission chain and the reverse transmission piece of the output end of the reverse transmission chain are in transmission connection with an output transmission piece through a clutch. The electric vehicle double speed motor is characterized in that the clutch comprises an output gear, a reverse clutch seat, a forward clutch seat and an inner gear ring, wherein the inner wall of the reverse clutch seat is provided with grooves which are uniformly distributed along the circumferential direction, the inner side of each groove is provided with a roller, the grooves are ladder-shaped, the outer wall of the reverse clutch seat is provided with check blocks which are uniformly distributed along the circumferential direction, the check blocks are located in notches of the inner wall of the forward clutch seat, the notches and the check blocks together constitute an attached idle running mechanism, the outer wall of the forward clutch seat is provided with wedge-shaped notches along the tangential direction, rollers are arranged in the wedge-shaped notches, one end of each roller is provided with a poking block capable of poking the roller, a protrusion capable of poking the poking block is arranged between each two check blocks of the reverse clutch seat, and the protrusions abuts against the poking blocks. The electric vehicle double speed motor has the advantages of being simple in structure, few in used parts and components, stable in operation, low in manufacturing cost, convenient to install, and low in noise.