Novel hot water bottle plug

The utility model discloses a novel hot water bottle plug which comprises a hot water bottle plug body. A circular cavity is formed inside the bottle plug body. The cavity is filled with heat preservation materials, a circular cover plate is arranged on the position of a circular cavity opening, a plurality of circular seal rings are arranged in the jam-packed direction of the bottle plug body, the seal rings are made of soft materials, and the heat preservation materials are of a cylindrical structure. According to the novel hot water bottle plug, the cavity is formed inside the hot water bottle plug body and then is filled with the heat preservation materials, by the adoption of the mode, the heat preservation effect of a hot water bottle can be improved, the seal rings are arranged at the cover bottom, and plug body jumping of the bottle plug after the bottle plug body is jam-packed is prevented effectively.