The invention discloses a puncture-resistant aluminum-plastic composite film for flexible packaging of lithium ion batteries, A lithium ion battery flexible package material technical field comprisesa seven-layer structure comprise a protective layer, a first adhesive layer, an aluminum foil layer, a second adhesive lay, a graphene separating layer, a third adhesive layer and a heat sealing layerin order from top to bottom, wherein that first adhesive layer, the second adhesive layer and the third adhesive layer are cured by an acrylate modified polyurethane adhesive. The invention improvesthe puncture resistance of the prepared aluminum-plastic composite film through the arrangement of the graphene isolation layer, and prevents the burr from puncturing the heat seal layer when the battery core is encapsulated so that the hydrofluoric acid in the battery core passes through the aluminum foil to cause pitting corrosion.