A container cover comprising a cover plate having a rear surface for contacting a container; and an annular closing member having a peripheral portion fixed to the cover plate along a rear peripheral portion of the cover plate and a remaining portion for detachably and resiliently contacting the rear surface of the cover plate. The container cover is applied to the container irrespective of type or size of the container. The container cover can be easily used since it is simply coupled with and detached from the container. In addition, since the container cover is not disposable, it does not cause resource waste or environmental problem.