A display device and a driving method of the display device are provided. The display device includes a case, a first reel, a flexible display screen, and a retractable component. The first reel is located inside the case. The flexible display screen is wound on the first reel, and is retractable or expandable along a first direction. The retractable component includes a first retractable component including N retractable parts that are capable of sliding with respect to each other along the first direction, where N is a positive integer greater than or equal to 2. When the flexible display screen is expanded, the N retractable parts are expanded along the first direction and are arranged along a second direction, where the second direction intersects the first direction. When the flexible display screen is retracted, the N retractable parts are arranged in sequence along the second direction.