To provide a linear guide sign which can be used by being mounted to a guard pipe or a guard wire.

A sign 3a made of a high-brightness reflection sheet is mounted on the surface of a sheet body 2 having flexibility, and touch hooks connecting both longitudinal ends of the sheet body 2 by drawing both ends after bridging the sheet body 2 between guard pipes are mounted at both ends of the sheet body 2. In addition to a spring 6 of the hook or a clamp 7 or 12 of a convex 11 provided outside, a shielding cover 8 is mounted for mischief prevention. The springs 6 and the convexes 11 for clamping both ends of the sheet body 2 wound around the upper and lower guard pipes are mounted at both ends of the sheet body 2, and both ends of the sheet body 2 are wound around and fixed to the guard pipes respectively.