Abstract: The invention relates to a protective device (1) for beverage cans (2). With the help of this device contamination of the drinking surface of beverage cans can be prevented and hygienic use after opening can be granted. The solution according to the invention has a cover (10) joining the upper part of the beverage can, which is characterized by that, the cover of the protective device is a cover of circular shape covering a discharging opening (9) of the beverage can and a cutout (8) is formed in ?=60°?120° degree on said cover, furthermore in the bottom of the cover there is a fixing brim (6) joining below the brim (5) of the lid (3) of the beverage can.