According to one embodiment, a tablet printing apparatus includes: a conveyor belt configured to convey a tablet a first suction path configured to suck the tablet to hold the tablet on the conveyor belt and suck the conveyor belt while allowing the conveyor belt to convey the tablet a second suction path configured as a different path from the first suction path to suck only the conveyor belt while allowing the conveyor belt to convey the tablet and a printer configured to perform printing on the tablet conveyed by the conveyor belt.