A wet material storage container capable of storing wet materials such as wet tissue, requiring less installation area, and so formed that a cover closing a takeout opening can be quickly opened. The wet material storage container comprises a front body (2) and a rear body (3) provided by vertically dividing a vertical container, and can be assembled in the vertical container with high airtightness by fitting fitting parts (5) and (6) formed at the peripheral edge portions thereof to each other. The takeout opening (15) for taking out the wet materials is formed in the front body (2) in an area starting at its side face upper end to its top face. The takeout opening (15) is closed by the cover (16) swingable about a rotating center axis set on the upper end of the takeout opening.