A display control device comprising: an acquirer that receives inclination information indicating an inclination angle of the head of an occupant in a mobile body from a detector connected to the display control device; and a controller being adapted to control a displayer connected to the display control device to generate a predetermined image (300, 400) when an object external to and in front of the mobile body is recognized by a recognizer which is connected to the display control device, the predetermined image (300, 400) representing a presentation image to be superimposed on the object when the presentation image is displayed on a display medium by the displayer, wherein in the case where the object is recognized by the recognizer, when the head is not inclined, the controller outputs a control information to the displayer to generate the predetermined image as a first predetermined image that represents a first presentation image that includes a first line in which a line segment connecting both ends of the first line is horizontal, and a vertical line which intersects the first line, when the head is inclined, the controller outputs a control information to the displayer to generate the predetermined image as a second predetermined image that represents a second presentation image that includes the vertical line and a second line which is obtained by inclining the first line by an angle (Θ2) which is determined according to the angle indicated by the inclination information, and the controller controls the displayer to display the predetermined image (300, 400) to be superimposed on the recognized object on the display medium, characterized in that the first presentation image is visually recognized by the occupant as a virtual first left image on the left side of the object and a virtual first right image separate from the first left image on the right side of the object, and the second presentation image is visually recognized by the occupant as a virtual second left image on the left side of the object and a virtual second right image separate from second left image on the right side of the object. an acquirer that receives inclination information indicating an inclination angle of the head of an occupant in a mobile body from a detector connected to the display control device; and a controller being adapted to control a displayer connected to the display control device to generate a predetermined image (300, 400) when an object external to and in front of the mobile body is recognized by a recognizer which is connected to the display control device, the predetermined image (300, 400) representing a presentation image to be superimposed on the object when the presentation image is displayed on a display medium by the displayer, wherein in the case where the object is recognized by the recognizer, when the head is not inclined, the controller outputs a control information to the displayer to generate the predetermined image as a first predetermined image that represents a first presentation image that includes a first line in which a line segment connecting both ends of the first line is horizontal, and a vertical line which intersects the first line, when the head is inclined, the controller outputs a control information to the displayer to generate the predetermined image as a second predetermined image that represents a second presentation image that includes the vertical line and a second line which is obtained by inclining the first line by an angle (Θ2) which is determined according to the angle indicated by the inclination information, and the controller controls the displayer to display the predetermined image (300, 400) to be superimposed on the recognized object on the display medium, characterized in that the first presentation image is visually recognized by the occupant as a virtual first left image on the left side of the object and a virtual first right image separate from the first left image on the right side of the object, and the second presentation image is visually recognized by the occupant as a virtual second left image on the left side of the object and a virtual second right image separate from second left image on the right side of the object.