A top lid for beverage cans with an opener integrated sanitary cover is disclosed. The sanitary cover 8 is designed to cover the area around the opening piece 3a defined on the top lid 50 by a depressed seam 3c, thus protecting the lip contact portion of the top lid 50 from atmospheric impurities and keeping the can sanitary during storage of the can. The sanitary cover 8 also has a reinforced opener part 13 which presses down the opening piece 3a and breaks the piece 3a along the depressed seam 3c when the cover 8 is levered up. The opener part 13 has a reinforcing rib 13b improving the stiffness of the opener part 13, and so the opener part 13 reliably breaks the opening piece 3a without failure even though a high pressure acts on the interior surface of the opening piece 3a. The configuration and arrangement of the reinforcing means for the opener part 13 may be freely changed in accordance with the designed conditions of the can, or the interior pressure acting on the opening piece 3a and the size of the can. The sanitary cover 8 also has a thumb-operable resilient dome 6 used for elastically raising up the cover 8 when the dome 6 is pressed down by a thumb. Due to the dome 6, it is easy for a user to handle the cover 8 while levering up the cover 8 to open the top lid 50.