To provide a road marking body, which enables replacement of a component by easily attaching/detaching a column portion and a beam one.

First and second screws are provided at both ends of a beam-like sign portion, respectively; one columnar sign portion, where the beam-like sign portion is laid, is provided with a third screw being screwed to the first screw; the other columnar sign portion is provided with a fourth screw being screwed to the second screw; and the first and third screws, and the second and fourth screws are simultaneously screwed together by the rotation of the beam-like sign portion in one direction. Since the respective screws can be simultaneously screwed together by rotating the beam-like sign portion in one direction and unscrewed from one another by rotating it in the reverse direction, the beam-like sign portion and each of the columnar sign portions, where the beam-like sign is laid, can be easily attached/detached.