Stator core and motor

The invention relates to a stator core and a motor. The stator core comprises an annular stator magnet yoke, a plurality of stator teeth, a first end face, a second end face and a first tooth root cooling channel. The plurality of stator teeth are distributed at intervals along the circumferential direction of the stator magnet yoke, and the plurality of stator teeth are formed on one side, facing the rotor, of the stator magnet yoke. The first tooth root cooling channel comprises a first inlet, a first outlet and a first main channel communicated with the first inlet and the first outlet, the first inlet is arranged between the first end face and the second end face, the first outlet is arranged on the first end face, the first main channel is arranged at the tooth root of the stator tooth, and the first inlet and the first outlet are communicated with each other through the first main channel. And the first main channel extends along the axial direction of the stator core, and the axial distance between one