Provided is a metal-oxygen cell whereby cycle performance can be enhanced. A meta-oxygen cell (1) provided with: a positive electrode (2) including an oxygen storage material and having oxygen as the active material thereof; a negative electrode (3) having a metal as the active material thereof; and an electrolyte layer (4) including an electrolytic solution, the electrolyte layer (4) being sandwiched between the positive electrode (2) and the negative electrode (3); the cell reaction of the positive electrode (2) occurring at a surface of the oxygen storage material; wherein the positive electrode (2) includes an electroconductive polymer for covering at least a portion of the surface of the oxygen storage material, the electroconductive polymer being capable of suppressing permeation of oxygen and capable of conducting metal ions.
