This medical flexible container includes: a heat-sealed section (23) formed by pasting together at least two flexible plastic sheets into a sac shape； an aperture (4) that can open and close； and a housing section (21) for housing a liquid disposed below the aperture. The medical flexible container includes: a flexible sac member (2) that has a discharge port (22) at the bottom end； and a sac member support section (5) that is affixed to one of the primary surfaces of the sac member and that is slackened in the center section thereof in a manner so as to form an insertion path (7) through which the fingers of a hand can be inserted. By means of the sac member including a constricted section (211) that has a shorter length in the widthwise direction than the other portions, both ends in the widthwise direction at the portion above the constricted section of the sac member each include an auxiliary support section (8a, 8b) that can be disposed above the hand when the sac member is supported by the fingers of the hand inserted in the insertion path.本發明係一種醫療用軟質容器，其包括：可撓性之袋構件2，其藉由將至少2片軟質塑膠片貼合成袋狀而形成，包含熱封部23、可開閉之開口部4、及配置於較開口部更下側之用以收容液狀物之收容部21，且於下端具有排出口22；以及袋構件支持部5，其使中央部鬆弛而固定於袋構件之一主面，以形成可插入手指之插入通路7；且包括輔助支持部8a、8b，該輔助支持部8a、8b係由於袋構件包含寬度方向之長度較其他部分短之頸部211，從而袋構件之較頸部更為上側部分之寬度方向兩端部於袋構件藉由插入至插入通路中之手指支持時可分別配置於該手上。
