A medicine feeder is provided that causes no axial rotation beyond controlduringfitting between transmission mechanisms. The medicine feeder includes amedicine storingdevice (120) and a drive device (130). The medicine storing device (120)includes acontainer and a discharge mechanism. The container stores medicines. Thedischargemechanism is rotationally driven to discharge the medicines from thecontainer, and includesa first transmission mechanism (60) with a fitting portion (61). The drivedevice (130)rotationally drives the discharge mechanism when the medicine storing device(120) isbrought into a cooperation enabling position, and includes a secondtransmission mechanism(70) with a fitted portion (76). When the fitting portion (61) of the firsttransmissionmechanism (60) and the fitted portion (76) of the second transmissionmechanism (70) arefitted with each other, the drive device (130) can rotationally drive thedischarge mechanismof the medicine storing device (120). The fitted portion (76) is supported tobe displaceablein the axial direction of a drive shaft (71), and moved by an energy storingmember (75).