The utility model relates to a totally easy-open cover for a glass bottle can. The edge of a cover body is provided with a pull ring. As the handle of the pull ring is longer, the connecting position of the handle and the bottle cover is narrower and the slope angle of the pull ring is within the thickness range of the bottle cover, the totally easy-open cover for a glass bottle can conforms to the existing canned production process and the sanitary standard of the food preservation. When the glass bottle can needs opening, the pull ring is pulled along a pre-carving (pressing) mark, and the bottle cover can be opened when the pull ring is pulled for half of the circumference of the cover body.