Wine bottle mounting cavity for wine fresh-keeping device

The utility model discloses a wine bottle mounting cavity for a wine fresh-keeping device. The wine bottle installation cavity comprises an inner cavity, the interior of the inner cavity is matched with the wine sleeve in shape, and the inner cavity is provided with a fourth opening enabling the wine sleeve to be communicated with the outer cavity and a fifth opening allowing the wine sleeve to enter. The inner cavity is provided with a fifth opening, the outer cavity is fixedly arranged outside the inner cavity, a gap is formed between the inner cavity and the outer cavity, and the outer cavity is further provided with a sixth opening matched with a refrigerating device and a seventh opening matched with the fifth opening. The wine bottle fixing device is a part in a brand-new wine freshness retaining device, is ingenious in structure, fixes a wine bottle in a mode of combining the inner cavity and the outer cavity, enables a gap between the inner cavity and the outer cavity to be isolated from the outer she