A multi-display device comprising: a main frame; a plurality of module supporters disposed on the main frame; a plurality of display modules which are hung on the plurality of module supporters, each of the plurality of display modules including a display panel (100, 110, 120, 130); and a spacer positioned between two adjacent display modules of the plurality of display modules, wherein the spacer includes: a base plate positioned parallel to a width direction of the display modules; a first protrusion extending from a first surface of the base plate, the first surface facing one of the two display modules, wherein the first protrusion is inserted into a first hole (H130C) of the one of the two display modules, the first hole (H130C) having spirals; and a second protrusion extending from a second surface opposite the first surface of the base plate, the second surface facing the other one of the two display modules, wherein the second protrusion is inserted into a second hole (H130A) of the other of the two display modules, wherein the first protrusion has spirals that correspond to the spirals of the first hole (H130C), and wherein a length of the second protrusion is equal to or greater than a length of the first protrusion characterised in that the base plate includes a portion which protrudes further than the two adjacent display modules in the width direction of the display modules, and in that a diameter of the first protrusion is greater than a diameter of the second protrusion. a main frame; a plurality of module supporters disposed on the main frame; a plurality of display modules which are hung on the plurality of module supporters, each of the plurality of display modules including a display panel (100, 110, 120, 130); and a spacer positioned between two adjacent display modules of the plurality of display modules, wherein the spacer includes: a base plate positioned parallel to a width direction of the display modules; a first protrusion extending from a first surface of the base plate, the first surface facing one of the two display modules, wherein the first protrusion is inserted into a first hole (H130C) of the one of the two display modules, the first hole (H130C) having spirals; and a second protrusion extending from a second surface opposite the first surface of the base plate, the second surface facing the other one of the two display modules, wherein the second protrusion is inserted into a second hole (H130A) of the other of the two display modules, wherein the first protrusion has spirals that correspond to the spirals of the first hole (H130C), and wherein a length of the second protrusion is equal to or greater than a length of the first protrusion characterised in that the base plate includes a portion which protrudes further than the two adjacent display modules in the width direction of the display modules, and in that a diameter of the first protrusion is greater than a diameter of the second protrusion. a base plate positioned parallel to a width direction of the display modules; a first protrusion extending from a first surface of the base plate, the first surface facing one of the two display modules, wherein the first protrusion is inserted into a first hole (H130C) of the one of the two display modules, the first hole (H130C) having spirals; and a second protrusion extending from a second surface opposite the first surface of the base plate, the second surface facing the other one of the two display modules, wherein the second protrusion is inserted into a second hole (H130A) of the other of the two display modules, wherein the first protrusion has spirals that correspond to the spirals of the first hole (H130C), and wherein a length of the second protrusion is equal to or greater than a length of the first protrusion characterised in that the base plate includes a portion which protrudes further than the two adjacent display modules in the width direction of the display modules, and in that a diameter of the first protrusion is greater than a diameter of the second protrusion.