The gas barrier laminate film according to claim 1, wherein the monomer containing at least two oxetanyl groups in the molecule is a compound represented by the following formula (8): Formula (8) wherein R3 is hydrogen atom, fluorine atom, an alkyl group having 1 to 6 carbon atoms such as methyl group, ethyl group, propyl group and butyl group, a fluoroalkyl group having 1 to 6 carbon atoms, allyl