To provide a medical multi-chamber container capable of assuring administration of medicines to a patient after the medicines each stored in each storage chamber are surely mixed, and capable of surely preventing an accidental trouble by mistake of the administration of the medicines to the patient before the medicines are mixed.

The medical multi-chamber container 1 includes: the first and second storage chambers 10, 11; a partition weak seal part 20 for partitioning both the chambers 10, 11; a medicine discharge outlet 32 connected to the second storage chamber 11; and a discharge weak seal part 21 for partitioning off the medicine discharge outlet 32 from the second storage chamber. The liquid medicine is stored in at least one of both the storage chambers 10, 11. The partition weak seal part 20 and the discharge weak seal part 21 are opened by raising the pressure of both the storage chambers 10, 11. The pressure required to open the discharge weak seal part 21 is higher than the pressure required to open the partition weak seal part 20.