Provided is a means which makes it possible to prevent quality deterioration of a facilitated transport membrane for a long period of time. A method for packing the facilitated transport membrane selectively allowing a specific gas to permeate therethrough, includes the steps of: putting the facilitated transport membrane in a packaging body having a transmission rate of not more than 10,000 cm3/(m2·24 h·atm) for the specific gas; preventing a contact between the facilitated transport membrane and the specific gas; and lastly sealing the packaging body.