The present application provides a folding display device. The folding display device comprises a bending mechanism and a front frame structure. The bending mechanism comprises a first support part and a second support part that are rotatably connected to one side of the bending part, and a third support part and a fourth support part that are rotatably connected to another side of the bending part. The front frame structure comprises a first front frame part connected to the first support part, a second front frame part connected to the second support part, a third front frame part connected to the third support part, and a fourth front frame part connected to the fourth support part.