Building project stair protection structure

The utility model relates to the technical field of house building, in particular to a house building project stair protection structure which comprises a mounting seat, a cross rod and a vertical rod, an inserting groove is formed in the top of the mounting seat, the vertical rod is inserted into the inserting groove, a plurality of clamping grooves are formed in the peripheral side of the vertical rod in the circumferential direction, the vertical rod is provided with a plurality of locking blocks, and the locking blocks are clamped into the clamping grooves. The top of the mounting base is provided with a locking groove, the locking block is clamped into the locking groove, the mounting base is in threaded connection with a fixing sleeve, the top of the fixing sleeve is provided with an annular abutting plate, the bottom of the abutting plate abuts against the top of the locking block, the abutting plate is provided with a plurality of inlets and outlets, the transverse rod is provided with a plurality of