Safety warning column

The utility model relates to a safety warning fence, which has the beneficial effects that the safety warning fence comprises a warning fence main body and a connecting mechanism, the connecting mechanism is arranged on one side of the warning fence main body, and the connecting mechanism is fixedly connected to the inner part of an interface board; the connecting mechanism comprises a sliding pin, a limiting block, a spring, a fixing plate, a limiting pin, a sliding plate, a sliding groove, a sliding rod and a locking rod, the two sides of the warning fence body are horizontally, symmetrically and fixedly connected with the fixing blocks, the sides, close to each other, of the two fixing blocks are fixedly connected with the fixing rods, and the outer sides of the fixing rods are rotationally connected with interface plates. The height and the width are controlled by a worker, so that the device can warn more construction sites, warn vehicles and pedestrians in a larger construction site and well warn pit su