A substrate storing container includes: a container main body; a lid body that is attachable to and detachable from a container main body opening portion and can close the container main body opening portion; and a sealing member that closes the container main body opening portion together with the lid body, in which airtightness of the substrate storing space is enhanced so that 50% or more of a gas supplied to a substrate storing space can be discharged from an exhaust filter portion in a case in which a supply amount of a gas supplied from an outer space of the container main body to the substrate storing space through a gas supply filter portion is 22 liters per minute or less.