NOVELTY - A gas-barrier film (10a) has base material (11a) and barrier layer (12a). The barrier layer has silicon distribution curve which shows relationship between the atomic ratio of amount of silicon atom to total amount of silicon atom, oxygen atom and carbon atom and distance (L) from the barrier layer surface in film thickness direction, and carbon distribution curve which shows the relationship between the atomic ratio of amount of carbon to the total amount of silicon atom, oxygen atom and carbon atom and the distance (L). The carbon distribution curve has 2 or more extreme values.    USE - Gas-barrier film is used for organic electroluminescent element, organic thin-film solar cell, and liquid crystal display.    ADVANTAGE - The gas-barrier film has excellent gas-barrier property, low water vapor-permeation rate, excellent long-term storage stability, and high flexibility.    DETAILED DESCRIPTION - A gas-barrier film has a base material, an adhesive bond layer (14), and a barrier layer containing silicon, oxygen and carbon provided on both sides through adhesive bond layer. The stress of gas-barrier film is 5-30 N/25 mm. The barrier layer has silicon distribution curve which shows the relationship between the atomic ratio of amount of silicon atom to the total amount of silicon atom, oxygen atom and carbon atom and the distance (L) from the barrier layer surface in film thickness direction of barrier layer, oxygen distribution curve which shows the relationship between the atomic ratio of amount of oxygen atom to the total amount of silicon atom, oxygen atom and carbon atom and the distance (L) from the barrier layer surface in film thickness direction of barrier layer, and carbon distribution curve which shows the relationship between the atomic ratio of amount of carbon to the total amount of silicon atom, oxygen atom and carbon atom and the distance (L). In 90% or more of region of film thickness of barrier layer, the order of atomic ratio of oxygen, atomic ratio of silicon and atomic ratio of carbon is more often. The carbon distribution curve has 2 or more extreme values. The absolute value of difference of maximum value and minimum value of carbon atomic ratio in carbon distribution curve is 5 atomic% or more.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional schematic view of laminate of gas-barrier film. (Drawing includes non-English language text)    Gas-barrier films (10a,10b,10c,10d)    Base materials (11a,11b)    Barrier layers (12a,12b)    Films (13a,13b)    Adhesive bond layer (14)