A decelerating clutch of a washing machine, comprising: a bearing seat, at least one pair of bearings (4; 5), an input shaft, an output shaft, and an output shaft sleeve, wherein the input shaft and the output shaft are arranged coaxially, the output shaft sleeve is sleeved on the input shaft and the output shaft, the output shaft sleeve is configured to rotate relative to the input shaft, and the output shaft sleeve is connected with the input shaft in a transmission manner via a planetary gear train (6; 7; 8), characterized in that the output shaft sleeve is installed on the bearing seat via the pair of bearings (4; 5), comprising a first bearing and a second bearing, wherein the first and second bearings (4; 5) are correspondingly arranged at two ends of the output shaft sleeve, and wherein the bearing seat and the output shaft sleeve are respectively provided with locating structures (9; 13; 14; 31) for being coordinated with the first and second bearings (4; 5) and the locating structures (9; 13; 14; 31) are configured to axially limit movement of the output shaft sleeve relative to the bearing seat by means of two first locating structures (9; 31) that are arranged on the output shaft sleeve, and are respectively arranged at different sides of the first and second bearings (4; 5) and two second locating structures (13; 14) that are arranged on the bearing seat, and are arranged at another side of the first and second bearings (4; 5) with respect to the two first locating structures (9; 31) on the output shaft sleeve to limit axial movement of the first and second bearings (4; 5) in a manner that the first bearing is coordinated with one of said second locating structures of the bearing seat, to limit movement of the first bearing towards the second bearing while the second bearing is coordinated with one other of said second locating structures of the bearing seat, to limit movement of the second bearing towards the first bearing. wherein the input shaft and the output shaft are arranged coaxially, the output shaft sleeve is sleeved on the input shaft and the output shaft, the output shaft sleeve is configured to rotate relative to the input shaft, and the output shaft sleeve is connected with the input shaft in a transmission manner via a planetary gear train (6; 7; 8), characterized in that the output shaft sleeve is installed on the bearing seat via the pair of bearings (4; 5), comprising a first bearing and a second bearing, wherein the first and second bearings (4; 5) are correspondingly arranged at two ends of the output shaft sleeve, and wherein the bearing seat and the output shaft sleeve are respectively provided with locating structures (9; 13; 14; 31) for being coordinated with the first and second bearings (4; 5) and the locating structures (9; 13; 14; 31) are configured to axially limit movement of the output shaft sleeve relative to the bearing seat by means of two first locating structures (9; 31) that are arranged on the output shaft sleeve, and are respectively arranged at different sides of the first and second bearings (4; 5) and two second locating structures (13; 14) that are arranged on the bearing seat, and are arranged at another side of the first and second bearings (4; 5) with respect to the two first locating structures (9; 31) on the output shaft sleeve to limit axial movement of the first and second bearings (4; 5) in a manner that the first bearing is coordinated with one of said second locating structures of the bearing seat, to limit movement of the first bearing towards the second bearing while the second bearing is coordinated with one other of said second locating structures of the bearing seat, to limit movement of the second bearing towards the first bearing.