Abstract: In order to automatically arrange tiles of rectangular flat parallelepipeds having the front and the back which are put in disorder, these tiles are discharged one by one with their flat side down in a manner that the longitudinal direction of the tiles matches the predetermined direction. Then, it is judged whether the discharged tiles are turned with the front down or the back down. When the tiles have been judged not to be turned as desired, they are turned over while being carried; otherwise they are carried without being turned over. Finally the tiles are arranged in the predetermined conditions.