Abstract: A mute self-generating power generator comprises a stator power generation armature and a rotor excitation magnet. The armature extends in a direction towards the magnet to form a plurality of cylindrical induction magnetic poles, and windings are wound on the poles; the magnet comprises at least two layers of structures in a direction towards the armature, one of which consists of a non-magnetic conductive material, and the other layer is formed by alternately arranging ferromagnetic material excitation magnets and magnetic conduction material magnetizers in a circumferential direction; a combination ratio of the number of the ferromagnetic material cylindrical induction magnetic poles and the ferromagnetic material excitation magnets on the magnet meets a double three-phase power generation condition. The generator eliminates the root cause of vibration and noise from the principle, so that it works in a mute state, and can well meet use requirements of various fitness equipment.