Novel sewer pipeline structure

The invention discloses a novel sewer pipeline structure. An auxiliary sewer pipe is additionally arranged on the side wall above the bent position of a main sewer pipe, so that when the bent position of the main sewer pipe in charge of drainage and a transverse sewer pipe are blocked at ordinary times, reverse water directly flows out of the standby auxiliary sewer pipe to a sewage discharge pool; and the auxiliary sewer pipe is located below the ground of a first floor, so that the reverse water cannot flow into the first floor. If the first floor of some floors is independently drained, a second floor, a third floor and other low floors are protected from being invaded by the reverse water. A water level alarm is additionally arranged in the auxiliary sewer pipe, and the open end of the standby auxiliary sewer pipe is arranged in an upward convex streamline mode, so that water flow does not enter a standby pipeline when the main sewer pipe normally runs, and the alarm does not give an alarm. Once the main