An internal permeant magnet motor includes a shell, an annaular stator, which is fixed in the shell and has a coil for generating a mganetic field when a voltage is applied, a rotor, which is arranged in the stator and rotates relative to the stator, and includes a shaft which is rotatably supported by hte shell and a magnetic board pair surronding the periphery of hte rotor, a triangle part arranged between the magnetic board pair and the shaft, has planes matching the magnetic boards in the magnetic board pair, the triangle generate throughtput by rotating the rotor.