A method of manufacturing a conical-projections-sheet packaging body includes forming a plurality of conical-recess parts on a conical-projections forming sheet; forming, by supplying a conical-projections material to the conical-projections forming sheet, a conical-projections sheet including a base sheet and a plurality of conical projections formed on a surface of the base sheet and disposed inside the plurality of conical-recess parts; forming a plurality of sets of the conical-projections forming sheets and the conical-projections sheets by punching out the conical-projections forming sheets and the conical-projections sheets; and using a package member to package a set of the conical-projections sheets and the conical-projections forming sheets tightly adhered to one another. Thus, the plurality of conical projections of the conical-projections sheet are protected.