The utility model discloses a turnable mattress structure. The turnable mattress structure comprises a mattress frame and elastic sandwich layers, wherein the mattress frame comprises steel pipes and pillars, two projected threaded ends which are vertical to each other are respectively arranged at the upper end and the lower end of each pillar, the steel pipes are fixedly connected with the threaded ends of each pillar, an elastic underbed package is arranged outside the pillars and the steel pipes respectively, the mattress frame is composed of a first mattress frame layer and a second mattress frame layer, and one elastic sandwich layer is inlaid in each of the first mattress frame layer and the second mattress frame layer; a clamping slot is formed on each pillar at one sides of the first mattress frame layer and the second mattress frame layer, and corresponding rolling balls in the clamping slots of the first mattress frame layer and the second mattress frame layer are connected by virtue of springs; and a stone mattress is arranged in the second mattress frame layer, and diameter of each stone bead is no more than 10mm. The turnable mattress structure has the advantages that two mattress frame layers which are convenient for turn over are arranged, area of mattress is enlarged, and different mattress surfaces are replaced, so that stress of each mattress surface is uniform; and the mattress frame is simple to dismount and mount and can be conveniently moved.