Abstract: It is demanded that packages for cryopreservation containers which can prevent the conventional cryopreservation containers stored at very low temperatures, namely ?80 to ?196° C., from being damaged and are excellent in heat sealability be developed. The present invention provides a package for a cryopreservation container comprising at least an adhesive fluoropolymer film. The package for a cryopreservation container according to the invention makes it possible to store blood, rare cells and vital tissues in a very low temperature environment without any damage to the container. Further, the sealing strength resulting from heat sealing after placing a cryopreservation container in the packages is very good and, therefore, liquid nitrogen can be inhibited from entering the inside and thus contamination with bacteria, viruses or the like contained in liquid nitrogen can be avoided and the package can be prevented from being broken by expansion of intruder liquid nitrogen on the occasion of thawing.