Abstract: The present invention relates to a can opening device for allowing beverage or the like contained within a can to easily flow out. The can opening device of the present invention comprising a pair of opening portions defined by incision lines at positions spaced apart from each other at a predetermined interval on a top surface of the can filled with contents; an opening member including a pair of pressing portions for pressing the pair of opening portions, respectively, and a grip integrally formed with the pressing portions so as to extend in a direction opposite to the pressing portions; and a pair of lever fulcrums which fix the opening member to the top surface and are disposed close to the pressing portions so that the pressing portions press down the opening portions to be spaced apart from the top surface when the grip is pulled up. It is most preferable that the pair of opening portions be formed at marginal positions symmetric to each other on the top surface.