Provided is a drug supplying device in which the entrance of foreign matter in drug passages can be prevented and the effort involved in attaching/detaching drug containers can be saved. Container support parts (32) support drug containers (31) in a freely attachable/detachable manner. Drug passages (32P), through which drugs discharged from the drug containers (31) pass, are formed in the container support parts (32). The container support parts (32) each have an opening/closing member (60). The opening/closing members (60) are movable between open positions where the drug passages (32P) are opened and closed positions where the drug passages (32P) are closed.提供一種藥劑供給裝置，可抑制異物入侵藥劑通路，並可減輕藥劑容器之裝卸作業的麻煩。容器支撐部(32)，係裝卸自如地支撐藥劑容器(31)。於容器支撐部(32)，形成有使從藥劑容器(31)排出的藥劑通過的藥劑通路(32P)。容器支撐部(32)，係具有開閉構件(60)。開閉構件(60)，係可在開放藥劑通路(32P)的開放位置、以及封閉藥劑通路(32P)的封閉位置移動。
