The invention discloses a touch screen device and a scrolling method thereof. The device comprises a touch screen, an event module, a timing module, a computation module and a scrolling module, and the scrolling method comprises the following steps: detecting whether a press event happens; if the press event happens, detecting whether a movement event happens in an area beyond a scrolling bar in the touch screen; if the movement event happens, computing a movement direction and a movement speed of the movement event according to a position of a related touch contact; and scrolling the displaycontent in the touch screen along the movement direction at the movement speed. By the device and the method, scrolling can be realized as long as the press event and the movement event happen in thearea of the touch screen, and the touch contact related to the press event and the movement event can not be on the scrolling bar, therefore, the scrolling can be realized even if the scrolling bar is too thin or the touch screen is in a staggering environment, and user experience is enhanced.