The present invention provides a cartridge set including: a plurality of cartridges a plurality of holders, each of which has an upper end externally fitted to the outer peripheral surface of each of the cartridges, and has a lower end face whose outer diameter is greater than the outer diameter of the outer peripheral surface of the cartridge a supporting plate that has a plurality of through-holes, each of which has an inner diameter greater than the outer diameter of the outer peripheral surface of the cartridge and has each of the plurality of cartridges inserted therethrough a storage box that stores the supporting plate therein and a lid member that blocks an upper end opening of the storage box. According to the cartridge set of the present invention, a dual-chamber type combined container-syringe can be easily and smoothly manufactured.
