The present invention addresses the problem of providing a tablet cassette rotor that does not have many parts, can handle tablets of more shapes and sizes, and also can support automatic adjustment of the depth, width, and partitioning position of a tablet guideway. The problem is solved by a rotor (4) that is accommodated so as to be able to rotate in a cassette main body (3) accommodating tablets, and that has a plurality of tablet guideways (4b) for guiding the tablets to a tablet discharge hole, wherein the tablet guideways are provided with an inclined outer surface that is inclined with respect to the axis of rotation of the rotor and faces opposite an inverted cone-shaped inclined inner surface of the cassette main body. It is made possible to adjust the distance between the inverted cone-shaped inclined inner surface of the cassette main body and the inclined outer surfaces of the tablet guideways by raising/lowering the rotor relative to the cassette main body. It is made possible to adjust the distance between a partitioning member (8) and a tablet support table (47) that is located below the partitioning member and supports a lowermost tablet, by raising/lowering the tablet support table. It is made possible to rotate a first movable member (50) and second movable member (60) in a relative manner and adjust the distance between a first vertical protrusion (53) and second vertical protrusion (63) constituting the tablet guideways.本發明所提供之片劑盒用轉子，其部件數量少，並能夠處理更多形狀和大小的片劑，還可以自動地調整片劑引導路之深度、寬度以及分割位置；該轉子（4）以能夠旋轉之方式被收容於收容片劑的盒主體（3）中，且具有多條將片劑引導至片劑排出孔中的片劑引導路（4b）；片劑引導路中設有傾斜外面，該傾斜外面相對於轉子之旋轉軸傾斜且與盒主體之倒圓錐狀的傾斜內面對置；透過使轉子相對於盒主體上升或下降，能夠調整盒主體之倒圓錐狀的傾斜內面與片劑引導路之傾斜外面之間的距離；透過使位於分割部件下方且支撐最底部的片劑的片劑支撐台（47）上升或下降，能夠調整分割部件（8）與片劑支撐台之間的距離；透過使第一可動部件（50）和第二可動部件（60）相對旋轉，能夠調整構成片劑引導路的第一垂直突片（53）與第二垂直突片（63）之間的距離。
