To provide a connection structure between a breast-milk main body and a breast-milk storage bag which can easily connect a plurality of kinds of breast milk containment bags and prevent falling off thereof.A breast milk container main body 21 having a detachable attachment / detachment portion 28 and a breast milk storage bag 10 connected to the breast pump main body 21 in a state where a bottle is detached, comprising a breast pump main body 21 At least the lower end portion 28B of the detachable portion 28 is sized so as to be insertable into each of the breast milk injection ports 31 of a plurality of breast milk containers bags 10 having different sizes and the insertion A holding member 33 for holding the breast milk storage bag 10 arranged outside the portion NS in a direction crossing the direction of gravity in cooperation with the insertion portion NS.(FIG.【課題】複数種の母乳収容袋を容易に接続し、かつ、その脱落を防止できる搾乳器本体と母乳収容袋との接続構造を提供すること。【解決手段】ボトルを着脱可能な着脱部28を有する搾乳器本体21と、ボトルを外した状態で搾乳器本体21に接続される母乳収容袋10との接続構造であって、搾乳器本体21の少なくとも着脱部28の下端部28Bは、大きさの異なる複数の母乳収容袋10の夫々の母乳の注入口31に挿入可能な大きさとされており、搾乳器本体21の挿入する部分である挿入部NSの外側に配置された母乳収容袋10を、挿入部NSと協働して、重力方向と交差する方向に沿って挟持する挟持体33を有することを特徴とする。【選択図】図2
