The utility model discloses an embedded hoop casing pipe. The utility model relates to a PVC (polyvinyl chloride) pipe fitting, which comprises a plurality of PVC round pipes, a plurality of first plastic sheets and a plurality of second plastic sheets, the plurality of PVC pipes are sequentially arranged, every two sequentially adjacent PVC round pipes are connected through the first plastic sheets, and every two PVC pipes arranged at intervals are connected through the second plastic sheets. According to the pre-buried hoop sleeve, the hoop sleeve is pre-buried in a concrete member, so thatthe link of drilling of a drilling machine after the concrete member is conveyed to a site is omitted, the construction period is shortened, the relative precision of a hoop hole is improved, and theforming quality is good; meanwhile, the structure is simple, and the working efficiency is improved.