Package has a body portion capable of filling the liquid, mounted on the distal end of the barrel, a syringe with a needle for discharging the liquid, a cap covering the needle, at least the proximal end of the syringe and a housing covering, between the outer peripheral surface or the housing and the cap of the cap, a package for accommodating a liquid injection instrument stepped portion protruding outward is provided to the side surface of the barrel an accommodation space for accommodating the liquid injection device, said has from housing space and opening for taking out the liquid injection device, comprising a container capable of mounting a sealing member for sealing the opening, the the container has an engagement portion that engages with the step portion in order to remove the cap from the liquid injection device.包装体は、液体を充填可能な胴部と、前記胴部の先端部に取り付けられ、前記液体を排出する針とを有するシリンジと、前記針を覆うキャップと、前記シリンジの少なくとも基端部を覆うハウジングとを備え、前記キャップの外周面または前記ハウジングと前記キャップとの間に、前記胴部の側面よりも外側に突出した段差部が設けられた液体注入具を収納する包装体であって、前記液体注入具を収納する収納空間と、前記収納空間から前記液体注入具を取り出すための開口部とを有し、前記開口部を封止する封止部材を取り付け可能な容器を備え、前記容器は、前記液体注入具から前記キャップを取り外すために前記段差部と係合する係合部を有する。