Red wine heat preservation bag

The utility model discloses a red wine heat preservation bag which comprises an oblong heat preservation bag body and a handle arranged at the opening end of the oblong heat preservation bag body. A sealing skeleton structure is arranged at the opening end of the oblong heat preservation bag body. The oblong heat preservation bag body is sequentially divided into a polyester resin aluminum film composite polypropylene cast film, a polyester film composite pearl cotton layer and a linear low density polyethylene film from outside to inside. A heat preservation ferrule is arranged at the position close to the upper end in the oblong heat preservation bag body. One end of the heat preservation ferrule is connected with the linear low density polyethylene film on the inner side of the oblong heat preservation bag body. As for the requirement for red wind heat preservation, by means of reasonable structural improvement, particularly the heat preservation ferrule having the heat preservation effect, a red wine bottle in the heat preservation bag will not topple, the heat preservation ferrule can carry out targeted heat preservation for the shape feature of a bottle neck of the red wine bottle, and the heat preservation effect is further ensured by cooperating the heat preservation ferrule with the sealing skeleton structure.