A cutting apparatus by which a large sheet block obtained by stacking a plurality of large sheets is cut by a cutting means to divide the block into small blocks, wherein the respective sides when the large sheet is seen from above are assumed as an upper side, a right side, a lower side, and a left side, respectively, and the cutting apparatus comprises: a first cutting means for cutting the left side of the large sheet block so that a direction parallel to the left side conforms to the paper grain direction; a first pusher for pushing and conveying the left side of the cut large sheet block toward the right side direction; a second cutting means for cutting the right side of the large sheet block pushed and conveyed by the first pusher and sequentially cutting the right end of the large sheet block while interacting with the pushing and conveyance by the first pusher to divide the block into long column unit blocks in the up-and-down direction; a right side removal means for removing the remaining portion after the right side cutting by the second cutting means, a column unit block conveyance means for conveying the column unit blocks in the right side direction while maintaining a predetermined interval thereamong; a third cutting means for cutting each upper side of the column unit block; a second pusher for pushing and conveying the upper sides of the cut column unit blocks toward the lower side direction; a fourth cutting means for cutting the lower side of the column unit block pushed and conveyed by the second pusher and sequentially cutting the lower end of the column unit block while interacting with the pushing and conveyance by the second pusher to divide the block into small blocks; and a lower side removal means for removing the remaining portion after the lower side cutting by the fourth cutting means. a first cutting means for cutting the left side of the large sheet block so that a direction parallel to the left side conforms to the paper grain direction; a first pusher for pushing and conveying the left side of the cut large sheet block toward the right side direction; a second cutting means for cutting the right side of the large sheet block pushed and conveyed by the first pusher and sequentially cutting the right end of the large sheet block while interacting with the pushing and conveyance by the first pusher to divide the block into long column unit blocks in the up-and-down direction; a right side removal means for removing the remaining portion after the right side cutting by the second cutting means, a column unit block conveyance means for conveying the column unit blocks in the right side direction while maintaining a predetermined interval thereamong; a third cutting means for cutting each upper side of the column unit block; a second pusher for pushing and conveying the upper sides of the cut column unit blocks toward the lower side direction; a fourth cutting means for cutting the lower side of the column unit block pushed and conveyed by the second pusher and sequentially cutting the lower end of the column unit block while interacting with the pushing and conveyance by the second pusher to divide the block into small blocks; and a lower side removal means for removing the remaining portion after the lower side cutting by the fourth cutting means.