A storage container in which a uniform flow velocity of the purge gas can be achieved is provided. A storage container 1 is provided with a plurality of stages of storage units 5 each having an accommodating region S to accommodate an article and includes: a supply portion 10 configured to supply a purge gas; a duct portion 22 configured to communicate with one another throughout the plurality of storage units 5 and serve as a flow path for the purge gas supplied from the supply portion 10; and an introducing portion 24 configured to communicably connect the duct portion 22 with the accommodating region S and introduce the purge gas to the accommodating region S. In the flow path for the purge gas in the duct portion 22, a diffusion member 32 is arranged.