Provided is a drug container storage device, whereby, in sucking, with the use of a syringe that is provided with a communication part sucking and discharging a liquid, a drug stored in a drug container that is provided with a cover part into which the communication part can be inserted, the drug exposure to outside can be prevented even if the drug leaks out of the drug container or is volatilized therefrom. The drug container storage device, which is to be used for sucking, with the use of a syringe that is provided with a communication part sucking and discharging a liquid, a drug contained in a drug container that is provided with a cover part into which the communication part can be penetrated, wherein: said drug container storage device comprises a main body part provided with a closed space, in which the drug container is stored, and a first opening part, and an elastic sealing part which air-tightly closes the first opening part of the main body part and into which the communication part of the syringe can be penetrated and the drug container is stored in the main body part in such a manner that a space is formed between the cover part of the stored drug container and the elastic sealing part.本發明提供一種藥劑容器收容裝置,其係在使用具有進行液體之吸引及排出的流通部之注射器,進行吸引被收容於具有可供插入前述流通部之蓋部的藥劑容器中之藥劑之際,即使是在藥劑從藥劑容器漏出、揮發的情況,也能夠不至於曝露到外部。前述藥劑容器收容裝置係使用具有進行液體之吸引及排出的流通部之注射器,進行吸引被收容在具有可貫穿前述流通部的蓋部之藥劑容器中的藥劑之裝置;並具備具有可收容前述藥劑容器的閉合空間、與第1開口部之本體部,以及密封前述本體部之第1開口部並可貫穿前述注射器的流通部之彈性封止部;前述本體部係按照:使得在所收容的前述藥劑容器之蓋部、與前述彈性封止部之間形成空間的方式來收容前述藥劑容器。1‧‧‧藥劑容器收容裝置11‧‧‧本體部12‧‧‧蓋構材(閉合部)13‧‧‧彈性封止構材(彈性封止部)111‧‧‧第1開口部113‧‧‧胴部114‧‧‧肩部115‧‧‧頭部