A tablet packing apparatus in which there is no risk that next tablets will be mixed into tablets previously discharged. The packing apparatus includes a plurality of feeder vessels (36) containing the tablets, a plurality of mounting bases (32) on which respective feeder vessels (36) are mounted, and a tablet reserving member (200) disposed below the mounting base (32) and reserving the tablets fed from the feeder vessels (36) and a shutter (203,300) which is movable to open and close the lower opening of the tablet reserving member (200). The apparatus further comprises a LED (201) which is turned on when the tablets are fed to the tablet reserving member (200) and a sensor (206, 301a, 301b) for detecting opening or closing operation of the shutter (203), whereby when the sensor (206, 301a, 301b) detects the opening operation of the shutter (203,300), the LED (201) is turned off.