Protective device for civil engineering

The utility model relates to the technical field of civil engineering protection, and discloses a civil engineering protection device which comprises a protective fence, a connecting mechanism is arranged on the front face of the protective fence, a reinforcing mechanism is arranged on the outer side of the protective fence, the connecting mechanism comprises a fixing cylinder, the fixing cylinder is fixedly connected to the front face of the protective fence, and a circular plate is slidably connected to the inner wall of the fixing cylinder. Threaded rods are fixedly connected to one sides of the circular plates, inserting shafts are fixedly connected to the sides, away from the threaded rods, of the circular plates, and connecting grooves are formed in the tops of the protective fences. According to the protective device for civil engineering, through the arranged connecting mechanisms, the corresponding inserting blocks are inserted into the inner walls of the corresponding connecting grooves, then a hand