A gas-barrier laminate (10) of a structure in which a first inorganic barrier layer (3), a water-trapping layer (5) and a second inorganic barrier layer (9) are provided in this order on a plastic base material (1), wherein the water-trapping layer (5) is a layer in which a granular moisture-absorbing agent is dispersed in a matrix of an ionic polymer, the granular moisture-absorbing agent being capable of absorbing moisture to a degree lower than that attained by the matrix, and an organic layer (7) is provided between the water-trapping layer (5) and the second inorganic barrier layer (9), the organic layer (7) serving as an underlying layer for forming the second inorganic barrier layer. The water-trapping layer has excellent barrier property against water and is, at the same time, effectively suppressed from swelling despite it has absorbed moisture. The water-trapping layer is, further, effectively suppressed from losing its activity.