A storage bag is so designed as to enable accurate confirmation of an amount of a drug left therein. A drug storage container (1) includes a storage bag (2) storing a drug therein, a discharge unit (3), a sealing member and a measurement unit provided with a scale (7) for measuring a residual liquid amount. The discharge unit (3) is attached to the storage bag (2) so as to discharge a drug (M). The sealing member seals an opening of the discharge unit (3). The measurement unit is formed of a tubular member having such a hardness as not to undergo deformation depending on the variation in amount of the drug (M).
