Disclosed are a stepped jacket for packaging a puncture outfit and a manufacturing method therefor, the stepped jacket (100) comprising a proximal opening (140) defined by a horizontal wall (141), and the stepped jacket further comprising a closed distal end and a seamless housing (121) extending between the horizontal wall and the closed distal end, wherein a seamless cavity (120) comprising an end opening is defined by the seamless housing the seamless housing can be mainly divided into a first scanning wall (151), a transition scanning wall (161), and a second scanning wall (171) from a proximal end to a distal end thereof a body cavity (150) is defined by the first scanning wall, a transition cavity (160) is defined by the transition scanning wall, and an extension cavity (170) is defined by the second scanning wall the body cavity, the transition cavity and the extension cavity communicate with each other to form the main part of the seamless cavity the direction substantially perpendicular to the horizontal wall is referred to as an axial direction, and the direction substantially parallel to the horizontal wall is referred to as a transverse direction and the dimension of the transverse section of the body cavity is larger than that of the transverse section of the extension cavity.Linvention concerne un chemisage étagé pour emballer un accessoire de perçage et un procédé de fabrication pour celui-ci, lequel chemisage étagé (100) comprend une ouverture proximale (140) définie par une paroi horizontale (141), et lequel chemisage étagé comprend de plus une extrémité distale fermée et un boîtier sans raccord (121) sétendant entre la paroi horizontale et lextrémité distale fermée, une cavité sans raccord (120) comprenant une ouverture dextrémité étant définie par le boîtier sans raccord le boîtier sans raccord pouvant être principalement divisé en une première paroi de balayage (151), une paroi de balayage de transition (161) et une seconde paroi de balayage (17
