1. A display device, comprising: a fixing unit, through which the display device is capable of being worn on a head of a user; a processing unit configured to obtain a first image to be displayed; an image transmission unit configured to transmit the first image to a display unit; the display unit configured to display the first image obtained by the processing unit; a connection unit configured to connect the fixing unit and at least a first portion of the display unit, wherein the connection unit at least has a first state, in which at least the first portion is located in the user's visual region and faces the user; an image capturing unit configured to capture a second image; and the processing unit being further configured to generate the first image based on the second image.