To obtain a gas barrier moistureproof laminate having excellent gas barrier properties and moistureproof properties, and capable of being easily disaggregated and reclaimed after use by forming a gas barrier layer on the surface of a paper supporter, and further laminating a moistureproof layer comprising a tabular pigment and a synthetic resin latex thereon.

A gas barrier layer consisting essentially of microfibrous cellulose having ≥300% water retentivity (JAPAN TAPPI No. 26-78) is formed at least on one surface of a paper supporter, and a moistureproof layer obtained by formulating a tabular pigment treated with a coupling agent and having ≥10 aspect ratio, e.g. a phyllosilicate compound such as white mica, sericite and phlogopite, with a synthetic resin latex such as the styrene-butadiene-based one in a weight ratio of (30:70)-(70:30), and further adding an active hydrogen- reactive compound thereto, is coated on the resultant product to provide the objective moistureproof laminate with barrier properties.