The present invention provides a tablet printing method and apparatus for contactless-printing on a large number of tablets that are supplied successively and randomly in a predetermined plurality of rows. The apparatus includes a hopper 2 to supply tablets, a distributing unit 3 to distribute the supplied tablets in a predetermined plurality of rows, a conveyor 4 to convey the distributed tablets randomly with the plurality of rows maintained, a detection line sensor camera 5 to detect the tablets during conveyance of the conveyor 4, an inkjet printer 6 to print on the tablets during conveyance based on data detected by the detection line sensor camera 5, an inspection line sensor camera 7 to check printing state on the tablets, and a defective rejection unit 9 to reject a defective during conveyance of the tablets in the plurality of rows based on the check result of the inspection line sensor camera 7.