The utility model relates to the technical field of rescue capsules, in particular to a simple folding sleeper for a rescue capsule. The simple folding sleeper for the rescue capsule is simple in structure and convenient to operate. According to the technical scheme, an upper berth and a lower berth are arranged on each of two inner sidewalls of a capsule body; one end of each upper berth is connected with the upper part of the corresponding inner sidewall of the capsule body through a plurality of first hinges, and the other end of each upper berth is movably hinged with one end of each of a plurality of upper berth support components; the other ends of the upper berth support components are movably hinged with the middle parts of the inner sidewalls of the capsule body; the lower berths are positioned under the upper berths; one end of each lower berth is connected with the lower part of the corresponding inner sidewall of the capsule body through a plurality of second hinges, and a hinge seat is arranged at the other end of each lower berth; a pin shaft arranged at one end of each lower berth support leg penetrates through a through hole in the corresponding hinge seat, and is movably hinged with the corresponding lower berth; and the other end of each lower berth support leg is matched with a groove in the inner bottom surface of the capsule body. The simple folding sleeper can be widely applied to coal mine rescue.