A cutting apparatus including a first pusher for pushing and conveying the left side, toward the right side direction; a second cutter for cutting the right side of the large sheet block and sequentially cutting the right end to divide the sheet into long column unit blocks in the up-and-down direction; a right side remover for removing the remaining portion; a column unit block conveyer for conveying the column unit blocks in the right side direction while maintaining a predetermined interval thereamong; a second pusher for pushing and conveying the upper sides of the cut column unit blocks toward the lower side direction; a fourth cutter for cutting the lower side of the column unit block and sequentially cutting the lower end of the column unit block into small blocks; and a lower side remover for removing the remaining portion.