The present invention relates to a multi-cell container having a partition wall capable of separately storing medicines, each of which is of powdered state and of mixing with each other under simple and quick manner for providing a water solution. [Means for Solving the Problem] The multi-cell container includes a bag of substantially flat shape made of flexible film, a partition wall as a separable seal welding opposite inner surfaces of the bag and dividing an inner space of the bag into a plurality of compartments and an inlet-outlet port located at a periphery of the bag so as to be opened to one of the plurality of compartments for introduction and/or discharge of liquid. The partition wall has a horizontal section extending in a direction along the bottom of the bag and a vertical section bent therefrom and extending to the topside of the bag. A first larger volume compartment is formed on one side of the partition wall adjacent the bag bottom and a second smaller volume compartment is formed on the other side of the partition wall. The inlet-outlet port is opened to the first chamber.本發明係關於具備間隔壁之複室容器,其目的是為了將都是粉狀的藥劑以分離狀態收容且在使用時能簡易迅速地混合而以水溶液的形式提供。複室容器係具備:可撓性薄膜所構成之實質呈平坦狀的袋體、將前述袋體之相對向內面予以可剝離地熔接之可剝離的密封件所構成的間隔壁、以及以開口於前述複數個隔室當中之一個隔室的方式安裝於袋體之周邊部而用來進行液體的注入及排出之注出埠。間隔壁係具備:沿著形成有襠折之袋體底部延伸之水平部分、從水平部分彎折到袋體的上側部之垂直部。在間隔壁之袋體底部的接近側形成大容積之第1隔室,在間隔壁之相反側形成小容積之第2隔室,注出埠是開口於第1隔室。10...袋體10-3...袋體之與薄片之襠折部分之最往內折的部位對應的部位10A...袋體之襠折底部12...外周密封部(強密封部)12-3...外周密封部之熔接部12-4...外周密封部之擴寬部位14...開口14...開口之全周內緣15...把手16...注出埠16-1...螺紋部16-2...凸緣部18...間隔壁(可剝離密封部)18-1...間隔壁水平部18-2...間隔壁直立部18-3...間隔壁圓弧部20...第1隔室22...第2隔室L,L"...假想線