A thrust magnetic bearing comprising: a stator having a coil; and a rotor, wherein the coil allows a current to flow therethrough and produces a magnetic flux in a magnetic path defined by the stator and the rotor, the magnetic flux supporting the rotor in a non-contact manner, the stator has a main stator magnetic pole surface, the rotor has a main rotor magnetic pole surface, the main rotor magnetic pole surface facing the main stator magnetic pole surface in a rotor axial direction, characterised in that the stator has an auxiliary stator magnetic pole surface, the coil and the auxiliary stator magnetic pole surface overlap each other when viewed along a rotor axial direction, the rotor has an auxiliary rotor magnetic pole surface, the main rotor magnetic pole surface facing the main stator magnetic pole surface in a rotor axial direction, the auxiliary rotor magnetic pole surface facing the auxiliary stator magnetic pole surface, the auxiliary stator magnetic pole surface includes one or more first stator surfaces that extend in the rotor axial direction, and one or more second stator surfaces that extend in a rotor radial direction, the one or more first stator surfaces and the one or more second stator surfaces being alternately arranged, the auxiliary rotor magnetic pole surface includes one or more first rotor surfaces that extend in the rotor axial direction, and one or more second rotor surfaces that extend in the rotor radial direction, the one or more first rotor surfaces and the one or more second rotor surfaces being alternately arranged, and a condition Nr ≥ 1 and Nt ≥ 2 is satisfied, where Nr represents the number of pairs of the first stator and rotor surfaces and facing each other in the rotor radial direction, and Nt represents the number of pairs of the second stator and rotor surfaces and facing each other in the rotor axial direction. a stator having a coil; and a rotor, wherein the coil allows a current to flow therethrough and produces a magnetic flux in a magnetic path defined by the stator and the rotor, the magnetic flux supporting the rotor in a non-contact manner, the stator has a main stator magnetic pole surface, the rotor has a main rotor magnetic pole surface, the main rotor magnetic pole surface facing the main stator magnetic pole surface in a rotor axial direction, the coil and the auxiliary stator magnetic pole surface overlap each other when viewed along a rotor axial direction, the rotor has an auxiliary rotor magnetic pole surface, the main rotor magnetic pole surface facing the main stator magnetic pole surface in a rotor axial direction, the auxiliary rotor magnetic pole surface facing the auxiliary stator magnetic pole surface, the auxiliary stator magnetic pole surface includes one or more first stator surfaces that extend in the rotor axial direction, and one or more second stator surfaces that extend in a rotor radial direction, the one or more first stator surfaces and the one or more second stator surfaces being alternately arranged, the auxiliary rotor magnetic pole surface includes one or more first rotor surfaces that extend in the rotor axial direction, and one or more second rotor surfaces that extend in the rotor radial direction, the one or more first rotor surfaces and the one or more second rotor surfaces being alternately arranged, and a condition Nr ≥ 1 and Nt ≥ 2 is satisfied, where Nr represents the number of pairs of the first stator and rotor surfaces and facing each other in the rotor radial direction, and Nt represents the number of pairs of the second stator and rotor surfaces and facing each other in the rotor axial direction.