PROBLEM TO BE SOLVED: To provide a medical solution container and medical solution administration device configured to follow the volume thereof with respect to reduction in the medical solution.SOLUTION: A medical solution container 4 is adapted for use in a medical solution administration device and includes: a deformable soft section 41 a hard section 42 which has a predetermined shape and which forms a medical solution containing space 40 along with the soft section 41 and an outflow port 441 that is provided in the hard section 42 and through which a medical solution flows out of the medical solution containing space 40.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】薬液の減少に対して容積を追従させることができ、薬液を確実に送出できる薬液容器および薬液投与装置を提供すること。【解決手段】薬液容器4は、薬液投与装置に用いられる薬液容器4であって、変形可能な軟質部41と、所定の形状を有し、前記軟質部41とともに薬液収容空間40を形成する硬質部42と、前記硬質部42に設けられ、前記薬液収容空間40から薬液が流出する流出口441とを備えている。【選択図】図2