The invention discloses a single-phase alternating current permanent magnet linear disk type oscillating motor. The single-phase alternating current permanent magnet linear disk type oscillating motor comprises a motor base, a linear bearing, a stator iron core, a stator winding, a rotor iron yoke, a rotor permanent magnet, a linear guide rail, a limited block, a spring and a zero air gap guarantee point and is characterized in that: the stator has a disk type structure; the stator winding is embedded in a parallel toothed groove on the inner surface of the stator iron core and adopts concentrated winding arrangement; a rotor moves up and down along the linear guide rail through the linear bearing; the limited block controls the rotor only to do linear motion; N and S alternatively arranged permanent magnet is adhered to the inner surface of the rotor iron yoke; an N pole armature field and an S pole armature field which are formed by the permanent magnet and the stator winding correspond to each other; and the spring is positioned between the linear bearing and the stator motor base. The single-phase alternating current permanent magnet linear disk type oscillating motor is efficient and energy-saving, has a simple structure and no noise, is convenient to process and maintain, and is suitable for the fields of reciprocating short stroke linear motion, such as compressors, vibrating screens, pumps, family health-care massagers and the like.