A foldable display device is provided, including a flexible display screen, a folding mechanism, and a winding mechanism. The folding mechanism has an upper support surface and a lower support surface, and includes a first support and a second support. A first end of the flexible display screen encloses one end of the folding mechanism and is coupled to the first support, and a second end of the flexible display screen encloses the other end of the folding mechanism and is coupled to the second support.