Pre-buried pay-off hole

The utility model discloses a pre-buried pay-off hole which comprises a pay-off pipe and a threaded plug pipe, an inner diameter thread is arranged in the pay-off pipe, two symmetrically-arranged adjusting pipes are rotationally connected in the pay-off pipe, hook rod mechanisms used for fixing the pay-off pipe are arranged on the adjusting pipes, and a containing pipe is fixedly connected to thebottom of the pay-off pipe. A lifting handle is fixedly connected to the upper end face of the threaded plug pipe, outer diameter threads are arranged on the threaded plug pipe, and a fixing mechanismused for achieving paying-off fixing is arranged in the threaded plug pipe. The pay-off device is reasonable in structure, pre-embedding and setting of the pay-off hole are achieved during building construction by arranging the pay-off pipe, later construction is prevented from being affected by deformation of the pay-off hole, fixing and supporting of the pay-off pipe are achieved by arranging the hook rod mechanism, and