The invention relates to a novel solid-liquid separation, sewage draining and sludge removing underground pipeline and belongs to the field of underground pipeline design. The novel solid-liquid separation, sewage draining and sludge removing underground pipeline comprises a sewer pipe main pipe, a conveying device and a water drainage system; a curved-plane low friction slide plate is mounted onthe internal side of the sewer pipe main pipe; multiple layers of sludge stopping water-permeable rubber sheet are mounted at the lower end of the back surface of the low friction slide plate; conveying belts are mounted on the outer rings of a rolling shaft and a small-bore rolling shaft; a chain is mounted on the inner ring of the rolling shaft and engaged with a gear on the inner ring of the rolling shaft; a rotator is mounted on one side of the rolling shaft through a transmission shaft; two water drainage pipes are mounted at the bottom of the water drainage system; one water drainage pipe is connected with a water pump chamber through a gas pressure pipe; the other end of the water drainage pipe is connected to other connected pipelines; and the other water drainage pipe is directlyconnected to a drainage channel. According to the novel solid-liquid separation, sewage draining and sludge removing underground pipeline, through a maneuvering unit of the pipeline, dirt in the pipeline can be rapidly discharged so that the regional dirt flowing discharging is enhanced and dirt blockage is reduced.