Steel stair edge protective fence and steel stair

The invention relates to the technical field of steel stair construction, in particular to a steel stair edge protective fence and a steel stair. The steel stair edge protective fence comprises a sideedge plate on the side of the steel stair, a plurality of vertical rods sequentially arranged at intervals along the side edge plate, abutting parts and transverse rods, wherein connecting clamps areinstalled at one ends of the vertical rods, and connecting grooves allowing the side edge plate to be inserted are formed in the connecting clamps; the abutting parts are detachably installed on theconnecting clamps, penetrate through side plates of the connecting clamps, extend into the connecting grooves and abut against the side edge plate so as to fasten the side edge plate and the connecting clamps; and the transverse rods are mounted between the two adjacent vertical rods. When the steel stair edge protective fence is installed, the steel stair does not need to be machined, the integrity of the steel stair is gu