A stepping motor includes: a rotor having a plurality of magnetic poles, one stator base arranged near the rotor, a pair of magnetic yokes fixed on the stator base and arranged to face the magnetic poles of the rotor, a pair of excitation coils for exciting the pair of magnetic yokes respectively in response to drive pulses which have phase difference, and a pair of stator magnetic polar portions integrally formed with the stator base, for forming the magnetic paths together with the magnetic yokes respectively. Accordingly, it becomes possible to freely change the number of turns of the excitation coils without upsizing the magnetic yokes, which increases an assembly property and the reliability.