This invention relates to a laminated film for packaging food comprising a heat-resistant substrate layer, an elusion barrier layer and a sealant substrate layer arranged in this order, wherein said substrate of the heat-resistant substrate layer is polyester or polyamide, said elusion barrier layer does not pass decomposition products of polyester or polyamide produced during retort sterilization, and said elusion barrier layer is bonded to said sealant substrate layer through an adhesive resin layer by thermal lamination, and its manufacture.