The invention relates to a media device and a method for the interaction between the media device and a user. The media device includes a touch screen for displaying an interaction interface; the interaction interface includes navigation bars; the navigation bars are a plurality of concentric semi-circles which are sequentially displayed from inside to outside in a cascading manner, and at least include a first-layer function key display area, a second-layer function key display area and a third-layer function key display area; the touch screen receives touch actions of the user, judges the touched navigation bar area, and feeds function keys corresponding to the touched navigation bar area back to a processing unit in the media device; and according to the received touch actions, the processing unit controls a display processing module in the media device to display or hide the navigation bars or the corresponding function key display area. In the invention, the navigation bars in the interaction interface are the concentric semi-circles which are sequentially displayed from inside to outside in a cascading manner, so that the navigation bars can bear more columns, the navigation layers are clear and visual, the user cost is reduced, and the user acceptance is higher.