The utility model relates to a sidewalk sign brick, which belongs to the technical field of sign bricks. The utility model comprises a brick body made of thermosetting glass fiber reinforced plastic composite material, and a marking ring is arranged in the center of the surface of the brick body; The arrow mark is fixedly arranged in the cavity formed by the mark ring and the surface of the brick body; One side of the edge of the marker ring protrudes outward, forming a small opening for easy installation and removal of the arrow marker. The invention is simple in structure, reasonable in design, integrally formed by thermosetting glass fiber reinforced plastic composite materials, remarkable in acid and alkali resistance and aging resistance, bright and lasting in color and long in service life; The arrow mark is fixed on the surface of the brick body, which is convenient to mark the direction of the pipeline, and the arrow mark is not easy to fade and durable; There is a small U-shaped opening on the surface of the brick body, which is convenient for replacing the arrow mark block.