It is an object of the present invention to provide a tablet cassette rotor whose number of components is small and which can treat tablets having more various shapes and sizes and is adaptable to an automatic adjustment for a depth, a width and a partitioning position of a tablet guide path. As solving means for achieving this object, a rotor (4) which is rotatably contained in a cassette main body (3) for containing tablets and has a plurality of tablet guide paths (4b) for guiding the tablets to a tablet discharging hole. The rotor includes an inclined outer surface provided in the tablet guide path so as to be inclined with respect to a rotational axis of the rotor and face an inverse conical-shaped inclined inner surface of the cassette main body. A distance between the inverse conical-shaped inclined inner surface of the cassette main body and the inclined outer surface of the tablet guide path can be adjusted by raising and lowering the rotor with respect to the cassette main body. A distance between a partitioning member (8) and a tablet support table (47) can be adjusted by raising and lowering the tablet support table provided on the lower side of the partitioning member and supporting a lowest tablet. A distance between a first vertical protruding piece (53) and a second vertical protruding piece (63) constituting the tablet guide path can be adjusted by relatively rotating a first movable member (50) and a second movable member (60).
