NOVELTY - A gas barrier laminated film (10) has a primer layer (2), gas barrier layer (3) and gas barrier film layer (4) laminated on a surface of a base material layer (1), and primer layer (5), gas barrier layer (6) and gas barrier film layer (7) are sequentially laminated on the other surface of base material layer. The primer layer (2) and primer layer (5) contains acrylic polyol, isocyanate and a silane coupling agent. The gas barrier film layer (4) and gas barrier film layer (7) contains silicon compound (I) or its hydrolyzate, and/or silicon compound (II) or its hydrolyzate.    USE - Gas barrier laminated film is used for material for packaging foodstuffs, pharmaceuticals, solar cell module, organic electroluminescent substrate for flat panel display, and electronic-device component.    ADVANTAGE - The laminated film has excellent oxygen barrier property, transparency, dimensional stability and steam barrier property.    DETAILED DESCRIPTION - A gas barrier laminated film has a primer layer (2), gas barrier layer (3) and gas barrier film layer (4) laminated on a surface of a base material layer comprising plastic films, and primer layer (5), gas barrier layer (6) and gas barrier film layer (7) are sequentially laminated on the other surface of base material layer. The primer layer (2) and primer layer (5) contains acrylic polyol, isocyanate and a silane coupling agent. The gas barrier layer (3) and gas barrier layer (6) contains silicon oxide. The gas barrier film layer (4) and gas barrier film layer (7) contains silicon compound of formula: Si(OR1)4 (I) or its hydrolyzate, and/or silicon compound of formula: (R2Si(OR3)3)n (II) or its hydrolyzate. The primer layer (2) and primer layer (5) having thickness of 0.005 mu m or more and 1 mu m or less are formed by coating liquid containing water-soluble polymer having a hydroxyl group and drying. The gas barrier layer (3) and gas barrier layer (6) have thickness of 0.005 mu m or more and 2 mu m or less. The gas barrier film layer (4) and gas barrier film layer (7) have thickness of 0.05 mu m or more and 3 mu m or less. The product of thickness of gas barrier layer (3) and thickness of gas barrier film layer (4) is 0.001 or less. The product of thickness of gas barrier layer (6) and thickness of gas barrier film layer (7) is 0.001 or less. The product of sum of thickness of gas barrier layer (3) and thickness of gas barrier layer (6), and sum of thickness of gas barrier film layer (4) and thickness of gas barrier film layer (7) is 2.5 or less.    R1,R3=CH3, C2H5 or C2H4OCH3;and    R2=organic functional group.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of the gas barrier laminated film.    Base material layer (1)    Primer layers (2,5)    Gas barrier layers (3,6)    Gas barrier film layers (4,7)    Gas barrier laminated film (10)