Fixing device of steel structure fence

The utility model discloses a steel structure fence fixing device which comprises a square base, screw holes are formed in the four corners of the top of the square base, a cylinder is movably connected to the inner side of each screw hole in an inserted mode, the cylinders penetrate through the square base through the screw holes, and cylinder sleeves are fixedly connected to the tops of the cylinders. The center of the top of the cylinder and the position, corresponding to the cylinder sleeve, of the cylinder sleeve are each provided with a sliding groove, the inner side of each sliding groove is slidably connected with a sliding column, when the sliding columns move downwards along the sliding grooves, the inclined claws on the sliding columns slide out along the inclined grooves in the cylinder, and meanwhile the tops of the claws are propped open in a cross shape due to reverse thrust blocked by soil. And when facing a humid and soft land, the hook claws can be expanded and fixed in the deep position of