Provided is an optical information medium whereupon data is surely recorded even in a state where laser beam output characteristics are unstable. A recording layer (4) is provided with a first sub-recording film (4a) formed of a first material having Si as a main component, and a second sub-recording film (4b) formed of a second material having Cu as a main component with Sn added in the vicinity of the first sub-recording film (4a). The recording layer is formed on a base material (2). Data can be recorded (a recording section (M) is formed) and reproduced by irradiating the recording layer (4) with a laser beam (L).
