Novel cup cover structure and vacuum cup

The utility model relates to the technical field of cup covers, in particular to a novel cup cover structure and a vacuum cup. A novel cup cover structure comprises a connecting piece which is detachably fixed at an opening; a liquid flowing channel is formed between the connecting piece and the opening; the on-off structure is arranged at the connecting piece and is used for opening and closing the liquid flowing channel; the driving unit is arranged at the connecting piece and is used for driving the on-off structure; a first thread is arranged on the connecting piece; a second thread is arranged on the opening; a liquid flowing gap is formed in the first thread; the vacuum cup comprises the novel cup cover structure. After the cup is used for a long time, a user can detach the whole cup cover from the opening by rotating the connecting piece, then the connecting piece and the opening are cleaned, and due to the fact that the whole size of the cup cover is large, the opening is large in size, and cleaning i