A vehicle display device comprising: an image display unit that projects a display image onto a projected member of a vehicle and displays a virtual image corresponding to the display image projected onto the projected member in a virtual image display region in which the virtual image is displayable to allow a driver of the vehicle to view the virtual image; a vehicle information acquisition unit that acquires information regarding the vehicle; and a controller that is configured to cause the image display unit to display a vehicle information virtual image (So) corresponding to the information regarding the vehicle, wherein the virtual image display region includes viewing regions including: a binocular viewing region that is a portion where a right eye viewing region viewable with a right eye of the driver and a left eye viewing region viewable with a left eye of the driver overlap each other, and that is viewable with both eyes (ER, EL) of the driver; a right monocular viewing region that is adjacent to a left side of the binocular viewing region and is a portion of the right eye viewing region excluding the left eye viewing region; and a left monocular viewing region that is adjacent to a right side of the binocular viewing region and is a portion of the left eye viewing region excluding the right eye viewing region, the information regarding the vehicle includes state change information indicating a state change in the vehicle, characterized in that in a case where the acquired information regarding the vehicle is the state change information, the controller performs a display image control for the display image displayed by the image display unit so that a state change virtual image corresponding to the state change information is displayed in the same display form in both of the left monocular viewing region and the right monocular viewing region at the same time. an image display unit that projects a display image onto a projected member of a vehicle and displays a virtual image corresponding to the display image projected onto the projected member in a virtual image display region in which the virtual image is displayable to allow a driver of the vehicle to view the virtual image; a vehicle information acquisition unit that acquires information regarding the vehicle; and a controller that is configured to cause the image display unit to display a vehicle information virtual image (So) corresponding to the information regarding the vehicle, wherein the virtual image display region includes viewing regions including: a binocular viewing region that is a portion where a right eye viewing region viewable with a right eye of the driver and a left eye viewing region viewable with a left eye of the driver overlap each other, and that is viewable with both eyes (ER, EL) of the driver; a right monocular viewing region that is adjacent to a left side of the binocular viewing region and is a portion of the right eye viewing region excluding the left eye viewing region; and a left monocular viewing region that is adjacent to a right side of the binocular viewing region and is a portion of the left eye viewing region excluding the right eye viewing region, the information regarding the vehicle includes state change information indicating a state change in the vehicle, characterized in that in a case where the acquired information regarding the vehicle is the state change information, the controller performs a display image control for the display image displayed by the image display unit so that a state change virtual image corresponding to the state change information is displayed in the same display form in both of the left monocular viewing region and the right monocular viewing region at the same time. a binocular viewing region that is a portion where a right eye viewing region viewable with a right eye of the driver and a left eye viewing region viewable with a left eye of the driver overlap each other, and that is viewable with both eyes (ER, EL) of the driver; a right monocular viewing region that is adjacent to a left side of the binocular viewing region and is a portion of the right eye viewing region excluding the left eye viewing region; and a left monocular viewing region that is adjacent to a right side of the binocular viewing region and is a portion of the left eye viewing region excluding the right eye viewing region, the information regarding the vehicle includes state change information indicating a state change in the vehicle, characterized in that in a case where the acquired information regarding the vehicle is the state change information, the controller performs a display image control for the display image displayed by the image display unit so that a state change virtual image corresponding to the state change information is displayed in the same display form in both of the left monocular viewing region and the right monocular viewing region at the same time.