Protective fence

The utility model discloses a protective guard which is characterized by comprising a first stand column, one side of the first stand column is fixedly connected with a first transverse bar, the bottom of the first transverse bar is fixedly connected with a plurality of blocking rods, the bottoms of the blocking rods are fixedly connected with a second transverse bar, the end, away from the first stand column, of the first transverse bar is fixedly connected with a second stand column, and the second transverse bar is fixed between the first stand column and the second stand column. A plurality of spines are fixedly connected to the top of the first transverse bar, warning blocks are fixedly connected to the tops of the first stand column and the second stand column, a first anti-collision device is arranged outside the blocking rod, a second anti-collision device is arranged outside the first stand column and the second stand column, and a base is fixedly connected to the bottoms of the first stand column an