Sealing liquid cover

The utility model relates to the technical field of packaging, in particular to a sealing cover. The sealing liquid cover comprises a cover body and an outer cover, the interior of the cover body is of a hollow structure with the upper portion and the lower portion open, the cover body comprises a cover body upper portion and a cover body lower portion, the hollow structure penetrates through thecover body upper portion and the cover body lower portion, an elastic sealing device is arranged in the cover body upper portion, and a cross-shaped notch facilitating catheter insertion is formed inthe middle of the elastic sealing device. A circle of accommodating groove is dug in the lower part of the cover body along the circumference, is communicated with the inside and the outside of the cover body and is filled with blocky activated carbon; and a fixing device fixed with the container is arranged at the bottom of the lower part of the cover body. Due to the adoption of the technical scheme, when the liquid-gas