To provide a tablet storage device capable of properly selecting quantity of storable tablets, while remarkably reducing a crack and chipping of the tablets stored in a vessel.

This tablet storage device has a passing chute 2 arranged to incline in the vertical direction and the horizontal direction and passing the tablets, a support stage 5 arranged on the downstream side of the passing chute 2 and supporting a drum 4 for storing the tablets passing through the passing chute 2, an actuator 6 for moving the support stage 5 to rock the bottom 24 side of the drum 4 in the vertical direction with the opening port 23 side of the drum 4 as a fulcrum while holding a proximity state of the drum 4 to the passing chute 2, a tablet sensor part 3 for detecting the tablets passing through the passing chute 2, and a CPU 8 for moving the actuator 6 on the basis of detection of the tablet sensor part 3.