PURPOSE: To obtain a slip-inserting pocket capable of easily taking in and out a slip and capable of also using a computer control unit by providing guide characteristics or a stop region to the bottom part of a pocket part and providing the individual slip inserting pocket so as to continue the same to a continuous web.

CONSTITUTION: Predetermined printing is applied to various labels 105a, 105b, 105c... and, if necessary, slip-inserting pockets 100 by engaging sprocket holes 107 with a feed sprocket and using a printing press controlled by a computer and, when each of the slip-inserting pocket 100 is peeled from continuous pasteboard 101, the continuous pasteboard 101 is cut off in the shape of a pocket part 103 to be bonded to the back surface of the packet part 103 and peeled in such a state that a releasable and bondable adhesive is applied to the part of the front sheet 102 of the periphery thereof. When this is bonded to the inside of the cover 108 of a book 109, it is bonded by the adhesive applied to the periphery of the pocket part 103 containing a guide part 104t and the pocket part 103 inserting a slip such as a card 110 is formed.