A medicine feeder that causes no axial rotation beyond control during fitting between transmission mechanisms includes a medicine storing device and a drive device. The medicine storing device includes a container and discharge mechanism. The container stores medicines. The discharge mechanism is rotationally driven to discharge medicines from the container, and includes a first transmission mechanism with a fitting portion. The drive device rotationally drives the discharge mechanism when the medicine storing device is brought into a cooperation enabling position, and includes a second transmission mechanism with a fitted portion. When the fitting portion of the first transmission mechanism and the fitted portion of the second transmission mechanism are fitted with each other, the drive device can rotationally drive the discharge mechanism of the medicine storing device. The fitted portion is supported to be displaceable in the axial direction of a drive shaft, and moved by an energy storing member.
