Warning device for municipal construction

The utility model relates to the technical field of municipal construction, and discloses a warning device for municipal construction, which comprises a base, a flow guide seat is fixedly mounted at the top end of the base, a mounting seat is fixedly mounted at the top end of the flow guide seat, four springs are fixedly mounted on the inner side surface of the mounting seat, and the number of thesprings is four. Limiting rings are fixedly mounted at the ends, away from the mounting base, of the four springs, and main rods located in the limiting rings are fixedly mounted at the top ends of the flow guide bases. According to the warning device for municipal construction, the mounting base is fixed to the bottom end of the flow guide base, the spring and the limiting ring are fixed to theinner side face of the mounting base, the diameter of the limiting ring is slightly larger than that of the main rod, when the main rod swings along with wind in gale weather, the main rod collides with the limiting ring, and