To provide a permanent magnet type motor having high torque and high efficiency by preventing the lowering of the density of main flux by leakage flux between permanent magnets in constitution, in which the permanent magnets are buried to a rotor yoke.

A plurality of permanent magnets 15 are buried concentrically to a rotor yoke 12 configuring a rotor 11 along the circumferential direction. In the permanent magnet 15, low magnetic-force permanent magnet sections 15b are installed integrally at both ends of a high magnetic-force permanent magnet section 15a. When yoke sections among the permanent magnets 15 are marked at that time, the intensity of leakage flux leaking to the outside through the yoke sections is reduced. Accordingly, since leakage flux as a magnetic pole in the opposite direction to main flux can be lowered, air-gap flux-density distribution between the rotor 11 and a stator can be made to approximate to sine waves.