A sheet storage apparatus comprising: a housing; a taking-in unit configured to take in a sheet into the housing; a transport unit configured to transport the sheet taken in into the housing by the taking-in unit; and a recognition unit configured to recognize the sheet transported by the transport unit, wherein a holding unit configured to hold a storage bag in a state where an opening portion of the storage bag is opened or in a state where the opening portion of the storage bag is sealed; a sealing unit configured to seal the opening portion of the storage bag held by the holding unit; a regulation unit (62, 64) configured to selectively regulate access to the storage bag held by the holding unit; and a control unit configured to control the regulation unit (62, 64) so as to allow access to the storage bag held by the holding unit in a state where the opening portion of the storage bag is opened when a predetermined condition is satisfied, characterized in that the control unit is configured to determine that the predetermined condition is satisfied when an instruction to insert the sheet directly into the storage bag held by the holding unit without transporting the sheet through the taking-in unit, the transport unit, and the recognition unit, is inputted, and the control unit is configured to control the regulation unit (62, 64) so as to allow the sheet to be stored into the storage bag held by the holding unit without transporting the sheet through the taking-in unit, the transport unit, and the recognition unit when the control unit determines that the predetermined condition is satisfied. a housing; a taking-in unit configured to take in a sheet into the housing; a transport unit configured to transport the sheet taken in into the housing by the taking-in unit; and a recognition unit configured to recognize the sheet transported by the transport unit, wherein a holding unit configured to hold a storage bag in a state where an opening portion of the storage bag is opened or in a state where the opening portion of the storage bag is sealed; a sealing unit configured to seal the opening portion of the storage bag held by the holding unit; a regulation unit (62, 64) configured to selectively regulate access to the storage bag held by the holding unit; and a control unit configured to control the regulation unit (62, 64) so as to allow access to the storage bag held by the holding unit in a state where the opening portion of the storage bag is opened when a predetermined condition is satisfied, characterized in that the control unit is configured to determine that the predetermined condition is satisfied when an instruction to insert the sheet directly into the storage bag held by the holding unit without transporting the sheet through the taking-in unit, the transport unit, and the recognition unit, is inputted, and the control unit is configured to control the regulation unit (62, 64) so as to allow the sheet to be stored into the storage bag held by the holding unit without transporting the sheet through the taking-in unit, the transport unit, and the recognition unit when the control unit determines that the predetermined condition is satisfied.