PROBLEM TO BE SOLVED: To propose a decoration device for a paper sheet block end surface, and a memo pad manufactured by the same.SOLUTION: The decoration device M includes a decoration device body 1 and a tool device 2 for holding a paper sheet block P which is an object to be decorated. In the decoration device, which makes the decoration device body 1 act on a surface to be decorated of the object to be decorated by using one end surface of the paper sheet block P positioned oppositely to the decoration device body 1 as the surface to be decorated so as to perform desired decoration processing, the tool device 2 is arranged with a placing surface plate 21 at the bottom part, and on a surface of the placing surface plate 21, a paper sheet block storage part 21A with its upper part opening is formed and surrounded by a pair of facing laminated surface pressing plates 22 and a pair of end surface guide bodies 23 aligned and arranged orthogonally to the laminated surface pressing plates 22. Register of the paper sheet block P is performed, and the surface to be decorated is protected by a decoration surface protector 24.