Double-layer shell fabric

The utility model relates to double-layer shell fabric. The double-layer shell fabric is composed of upper layer warp yarns, upper layer weft yarns, lower layer warp yarns and lower layer weft yarns, wherein the upper layer warp yarns and the upper layer weft yarns are interwoven to form upper layer fabric, the lower layer warp yarns and the lower layer weft yarns are interwoven to form lower layer fabric, the lower layer warp yarns float out of the upper layer and are interwoven with the upper layer weft yarns every other two or more pieces of the lower layer warp yarns, and the lower layer weft yarns float out of the upper layer and are interwoven with the upper layer warp yarns every other two or more pieces of the lower weft yarns. According to the double-layer shell fabric, the materials of the upper layer and the materials of the lower layer can be adjusted flexibly according to actual needs to achieve higher heat insulation effects, the number of alternate yarns and bonding point positions can be adjusted according to demands of different patterns to meet the demands for different patterns, and adjustment is convenient.