A single phase permanent magnet motor includes a stator core, windings wound around the stator core, and a permanent magnet rotor rotatable relative to the stator core. The stator core includes an end portion and a pole arm extending from the end portion. The pole arm includes two connecting arms spaced from each other and pole claws respectively formed at distal ends of the connecting arms. The two pole claws define a space for receiving a rotor therein. The pole claws surround the space and form an arc pole surface. The arc pole surface has a first axial portion continuous along a circumference of the arc pole surface and a second axial portion being discontinuous along a circumferential direction of the arc pole surface.