A display control device that captures video images of the surroundings of a vehicle by a camera (10,11), and using image data from the camera, performs a display on an electronic mirror in a display mode selected from among a plurality of display modes, and comprising: an input unit to which input signals are inputted, the input signals including signals indicating operating states of switches (20 to 22) used for operating the electronic mirror and used for selecting a display mode from among the plurality of display modes to be displayed by the electronic mirror; a storage unit that together with prioritizing with a priority and storing each of a plurality of display modes in a hierarchical structure, stores mode setting conditions that are conditions for setting each display mode; a determination unit (S110, S130) for determining whether the mode setting conditions are satisfied for each of the plurality of display modes based on the input signals; and a setting unit (S200 to S265) that, of the plurality of display modes, sets a display mode having the highest priority from among the display modes for which the mode setting conditions are satisfied, as a display mode to be displayed on the electronic mirror, wherein the storage unit stores mode release conditions which are conditions for releasing the setting of each of the plurality of display modes; the determination unit determines whether or not the mode release condition is satisfied for each of the plurality of display modes based on the input signals; the determination unit, for each of the plurality of display modes, sets a display mode for which the mode setting condition is satisfied to have ownership, and sets a display mode for which the mode release condition is satisfied to have no ownership; and the setting unit sets the display mode having the highest priority among the display modes of the plurality of display modes that are set to have ownership to be the display mode that is displayed on the electronic mirror, characterized in that in the electronic mirror, the image data in an imaging range of the camera is partially cut out and displayed, and the plurality of display modes includes a display mode of an optical angle display that displays using a display angle equivalent to an optical mirror, and display modes that perform different special displays such as a wide-angle display that displays using a wider display angle than the optical angle display; the input signal includes a signal indicating a shift position and a signal indicating an instruction command of an external terminal provided outside the vehicle; and as one of the plurality of display modes, there is a maintenance mode that performs a maintenance display with a condition including the shift position being in a parking position, and a signal indicating the instruction command being inputted as the mode setting condition. an input unit to which input signals are inputted, the input signals including signals indicating operating states of switches (20 to 22) used for operating the electronic mirror and used for selecting a display mode from among the plurality of display modes to be displayed by the electronic mirror; a storage unit that together with prioritizing with a priority and storing each of a plurality of display modes in a hierarchical structure, stores mode setting conditions that are conditions for setting each display mode; a determination unit (S110, S130) for determining whether the mode setting conditions are satisfied for each of the plurality of display modes based on the input signals; and a setting unit (S200 to S265) that, of the plurality of display modes, sets a display mode having the highest priority from among the display modes for which the mode setting conditions are satisfied, as a display mode to be displayed on the electronic mirror, wherein the storage unit stores mode release conditions which are conditions for releasing the setting of each of the plurality of display modes; the determination unit determines whether or not the mode release condition is satisfied for each of the plurality of display modes based on the input signals; the determination unit, for each of the plurality of display modes, sets a display mode for which the mode setting condition is satisfied to have ownership, and sets a display mode for which the mode release condition is satisfied to have no ownership; and the setting unit sets the display mode having the highest priority among the display modes of the plurality of display modes that are set to have ownership to be the display mode that is displayed on the electronic mirror, characterized in that in the electronic mirror, the image data in an imaging range of the camera is partially cut out and displayed, and the plurality of display modes includes a display mode of an optical angle display that displays using a display angle equivalent to an optical mirror, and display modes that perform different special displays such as a wide-angle display that displays using a wider display angle than the optical angle display; the input signal includes a signal indicating a shift position and a signal indicating an instruction command of an external terminal provided outside the vehicle; and as one of the plurality of display modes, there is a maintenance mode that performs a maintenance display with a condition including the shift position being in a parking position, and a signal indicating the instruction command being inputted as the mode setting condition.