Disclosed is a head-mounted display device including: a head-mount display having a left lens, a right lens, a left display screen and a right display screen a lens position adjusting element of which a first lever is connected to the left lens and the right lens and is configured to be triggered to respectively move the left lens and the right lens laterally with respect to the respective left and right eyes of a user and a disparity adjusting element provided with a second lever and a disparity adjusting unit which is in signal connection with the left display screen, the right display screen and the second lever, and is configured to adjust an imaging angle and a relative position of the left and right images respectively on the left and right display screens corresponding to the preset visual angle of the user in response to triggering of the second lever.一種頭戴式顯示裝置,包含:一頭戴式顯示器,具有一左透鏡、一右透鏡、一左顯示屏幕及一右顯示屏幕;一透鏡位置調整構件,包含連接於該左透鏡及該右透鏡之一第一撥桿,經設置而在受調動時使該左透鏡及該右透鏡個別對於一使用者之左眼及右眼而橫向位移;以及具有一第二撥桿及一像差調整單元之一像差調整構件,訊號連接於該左顯示屏幕、該右顯示屏幕及該第二撥桿,經配置而因應於該第二撥桿的調動而對應一預設的使用者之雙眼視角變化而調整產生在該左顯示屏幕及右顯示屏幕上的一左眼影像及一右眼影像的呈像角度及相對位置。100‧‧‧頭戴式顯示裝置10‧‧‧透鏡位置調整構件20‧‧‧像差調整構件50‧‧‧頭戴式顯示器