A linear guide device comprising: a base member; a slider disposed slidably on the base member; and a guide member (110a to 110d), which is disposed between the base member and the slider so as to extend in a slide direction of the slider; wherein a diamond-like carbon film (136a to 136d) is formed on the guide member (110a to 110d), and the guide member (110a to 110d) is fixed by engagement with the slider in a manner in which the diamond-like carbon film (136a to 136d) is slidable in a state of applying a predetermined pre-load to the base member 102); wherein an installation groove (130a to 130d) in which the guide member (110a to 110d) is arranged is formed in the slider; wherein the diamond-like carbon film (136a to 136d) is formed on an outer peripheral surface of the guide member (110a to 110d); wherein a slide groove (114a to 114d) having a shape that corresponds with a shape of the guide member (110a to 110d) is formed in the base member; characterized in that the guide member (110a to 110d) is configured to be spring deformable, and is fixed by engagement with a wall surface of the installation groove (130a to 130d) by a spring restorative force of the guide member; wherein the guide member (110a to 110d) is made of spring steel formed in a C-shaped cross section; wherein a lubricant is contained in an inner hole of the guide member (110a to 110d); and wherein the guide member (110a to 110d) is disposed between the base member and the slider in a manner that a side hole, which opens on the outer peripheral surface of the guide member (110a to 110d), is positioned in the slide groove (114a to 114d). a base member; a slider disposed slidably on the base member; and a guide member (110a to 110d), which is disposed between the base member and the slider so as to extend in a slide direction of the slider; wherein a diamond-like carbon film (136a to 136d) is formed on the guide member (110a to 110d), and the guide member (110a to 110d) is fixed by engagement with the slider in a manner in which the diamond-like carbon film (136a to 136d) is slidable in a state of applying a predetermined pre-load to the base member 102); wherein an installation groove (130a to 130d) in which the guide member (110a to 110d) is arranged is formed in the slider; wherein the diamond-like carbon film (136a to 136d) is formed on an outer peripheral surface of the guide member (110a to 110d); wherein a slide groove (114a to 114d) having a shape that corresponds with a shape of the guide member (110a to 110d) is formed in the base member; characterized in that the guide member (110a to 110d) is configured to be spring deformable, and is fixed by engagement with a wall surface of the installation groove (130a to 130d) by a spring restorative force of the guide member; wherein the guide member (110a to 110d) is made of spring steel formed in a C-shaped cross section; wherein a lubricant is contained in an inner hole of the guide member (110a to 110d); and wherein the guide member (110a to 110d) is disposed between the base member and the slider in a manner that a side hole, which opens on the outer peripheral surface of the guide member (110a to 110d), is positioned in the slide groove (114a to 114d).