Building water supply and drainage embedded sleeve

The utility model discloses a building water supply and drainage pre-embedded sleeve, and relates to the technical field of water supply and drainage equipment, the building water supply and drainage pre-embedded sleeve comprises an outer pipe body, the two ends of the outer wall of the outer pipe body are fixedly sleeved with first ring bodies, and the outer walls of the two first ring bodies are sleeved with second ring bodies; first threaded assemblies fixed to the first ring bodies are arranged on the two second ring bodies correspondingly, second threaded assemblies are fixed to the front side and the rear side of the outer wall of the two outer pipe bodies correspondingly, and limiting transverse rods are fixed to the ends, away from the outer pipe bodies, of the two second threaded assemblies correspondingly; and a plurality of groups of limiting vertical rods are mounted on the outer walls of the two groups of limiting transverse rods in an equal-angle staggered manner. A limiting transverse rod is sc