Abstract: A paper sheet decorative punching device is disclosed. In the punching device, a cap-shaped pressure member is movably received in an opening of a housing with two longitudinal guide pieces vertically extending from the lower edge of the pressure member. A punching blade unit, allowing the pressure member to be rotatable within a range, has two punching blade parts. The two blade parts have different punching patterns and different lengths. Both the pressure unit and the punching blade unit are biased upwardly by a compression coil spring, and so the pressure unit is normally projected from the top of the housing. Two edge guide members are symmetrically hinged to a base plate and are adjustable between a closed position for guiding a sheet's corner and an open position for guiding a sheet's side. A jig unit, seated on the base plate, consists of an upper holder member and a lower cutting member, with a paper sheet insert gap being formed between the two members.