To provide a sheet-fed printing press that contributes to improvement of quality of paper sheets in conveyance of the paper sheets.

A guide member 21 is fixed, with bolts 22 at four places, to the lower part of front of a gripper G in a conveyance direction, i.e., to a lower side on a downstream side. The guide member 21 is made of iron and has a smooth surface, but may be formed of a resin etc., as long as the surface is not rugged. The guide member 21 is provided substantially over the entire surface in a longitudinal direction of the gripper G, and also has flexure prevention effect as a reinforcing material for the gripper G.