PROBLEM TO BE SOLVED: To provide an entry prevention fence with a grate fence which can be easily attached to transverse beams in plural states in a shape according to a gradient state of a road in a gradient section of the road, and to provide the grate fence.SOLUTION: An entry prevention fence 10 includes: plural support pillars 11, 11 driven into the ground at appropriate intervals along a road and erected generally perpendicularly transverse beams 12, 12 in plural stages connecting the support pillars 11, 11 adjacent to each other at a generally same dimension distance from a ground face in a height direction and a grate fence 20 fixed on the transverse beams 12, 12 in plural stages. The grate fence 20 includes: a grate attachment member extended along at least the two transverse beams 12, 12 a grate having plural grate rods long in a generally perpendicular direction, crossing the grate attachment member, and aligned in a transverse direction and a clip attached to the grate attachment member rotatably at a crossing position of each grate rod and each grate attachment member and sandwiching and holding the grate rod.SELECTED DRAWING: Figure 1
