To provide a technique capable of reducing the manufacturing cost in a multi-vision display device formed by combining a plurality of rear projection units.

In a multi-vision display device, each rear projection unit 1 includes: a basic cabinet 2 capable of being coupled to or separated from each other between the other rear projection unit 1 and housing an optical unit therein; and a screen attachment 20 which is capable of attachment and detachment between the screen unit and the basic cabinet 2, and used for correcting a projection distance from the optical unit to the screen by attachment or change.