A magnetic suspension pump, comprising: a magnetic suspension motor comprising a motor housing and a rotating shaft; a pump comprising a pump housing and an impeller, the pump housing and the motor housing being fixedly connected or integrally formed, and the impeller being coaxially and fixedly connected with the rotating shaft; a first sealing ring provided on the motor housing and/or the pump housing; a second sealing ring provided on the impeller and matched with the first sealing ring, when the second sealing ring rotates, an annular groove being scratched on the first sealing ring or by the first sealing ring; and a buffering member, wherein the buffering member is provided between the first sealing ring and the motor housing and/or the pump housing, and the buffering member can deform along an axial direction of the first sealing ring; and/or, the buffering member is provided between the second sealing ring and the impeller, and the buffering member can deform along an axial direction of the second sealing ring; characterized in that the first sealing ring comprises a first axial sealing ring and a first radial sealing ring; the second sealing ring comprises a second axial sealing ring and a second radial sealing ring; the first axial sealing ring is matched with the second axial sealing ring; the first radial sealing ring is matched with the second radial sealing ring; and each of the first axial sealing ring and the first radial sealing ring corresponds to the buffering member; the first axial sealing ring and the second axial sealing ring absorb an axial impact force when the rotating shaft is powered off and limit an axial displacement of the rotating shaft, the first radial sealing ring and the second radial sealing ring absorb a radial impact force when the rotating shaft is powered off and limit a radial displacement of the rotating shaft. a magnetic suspension motor comprising a motor housing and a rotating shaft; a pump comprising a pump housing and an impeller, the pump housing and the motor housing being fixedly connected or integrally formed, and the impeller being coaxially and fixedly connected with the rotating shaft; a first sealing ring provided on the motor housing and/or the pump housing; a second sealing ring provided on the impeller and matched with the first sealing ring, when the second sealing ring rotates, an annular groove being scratched on the first sealing ring or by the first sealing ring; and a buffering member, wherein the buffering member is provided between the first sealing ring and the motor housing and/or the pump housing, and the buffering member can deform along an axial direction of the first sealing ring; and/or, the buffering member is provided between the second sealing ring and the impeller, and the buffering member can deform along an axial direction of the second sealing ring; characterized in that the first sealing ring comprises a first axial sealing ring and a first radial sealing ring; the second sealing ring comprises a second axial sealing ring and a second radial sealing ring; the first axial sealing ring is matched with the second axial sealing ring; the first radial sealing ring is matched with the second radial sealing ring; and each of the first axial sealing ring and the first radial sealing ring corresponds to the buffering member; the first axial sealing ring and the second axial sealing ring absorb an axial impact force when the rotating shaft is powered off and limit an axial displacement of the rotating shaft, the first radial sealing ring and the second radial sealing ring absorb a radial impact force when the rotating shaft is powered off and limit a radial displacement of the rotating shaft.