High-elastic warm-keeping denim fabric

The utility model discloses a high-elastic warm-keeping denim fabric, and belongs to the technical field of denim fabrics. Comprising an outer denim fabric layer, a middle heat preservation layer, a bottom heat preservation layer and an anti-static layer, the outer denim fabric layer is sewn on one side of the middle heat preservation layer, the bottom heat preservation layer is sewn on the other side of the middle heat preservation layer, the anti-static layer is sewn on one side of the bottom heat preservation layer, and the outer denim fabric layer comprises warp, weft and elastic yarn. The warp yarns and the weft yarns are sewn in a three-up-and-one-down interweaving mode, the elastic yarns are inserted between the weft yarns in parallel, the middle heat preservation layer comprises a metal reflection layer, a polyethylene layer and air holes, V-shaped reflection faces are evenly distributed on one side of the metal reflection layer, the air holes penetrate through the metal reflection layer and the polye