Steel fixing structure for building

The utility model discloses a building steel fixing structure which comprises a vertical rod, a square connecting block is rotatably connected to the outer portion of the vertical rod, placing grooves are symmetrically formed in the square connecting block, steel structure rod pieces are slidably connected to the interiors of the placing grooves, sliding grooves are symmetrically formed in the bottom end of the vertical rod, and moving blocks are slidably connected to the interiors of the sliding grooves. A limiting rod is fixed to one end of the moving block, a lifting ring is fixed to the bottom end of the moving block, threads are fixed to the outer portion of one end of the vertical rod, the lifting ring further comprises a connecting ring, the lifting ring is in threaded connection with the end, with the threads, of the vertical rod, the top end of the lifting ring is rotationally connected with the connecting ring, and the top end of the connecting ring is fixedly connected with the moving block. And li