Hollow needle insertion structure used in wine fresh-keeping device

A hollow needle insertion structure used in a wine fresh-keeping device may be shown and described. A wine bottle installation chamber, where the wine bottle installation chamber is arranged in a containing chamber, and one end of the wine bottle installation chamber is matched with an exchange port, a wine sleeve, the wine sleeve is arranged in the wine bottle installation chamber, and a cooperating movement threads is provided between outer side wall of the wine sleeve and inner side wall of the wine bottle installation chamber; and a hollow needle, the hollow needle is matched with the wine bottle installation chamber; after the wine bottle is installed in the wine sleeve, the wine sleeve moves along the cooperating movement threads into the wine bottle installation chamber, and after contact with the hollow needle, the hollow needle is inserted into the wine bottle under the rotation of the wine sleeve.