Abstract: A display apparatus is disclosed. The display apparatus includes at least one display unit and a host. The host is cooperated with the at least one display unit. The host includes a sensing unit. When the at least one display unit displays a frame, the sensing unit is used to sense a first gaze position on the frame which is watched by an eye and a first distance between the eye and the first gaze position. When the display apparatus determines a first gaze range corresponding the first distance and divides the frame into a first gaze region and a first non-gaze region according the first gaze position and the first gaze range, the display apparatus changes a display parameter of the first gaze region or the first non-gaze region.