The utility model provides a novel centrifuge fluid -discharge tube, fluid -discharge tube including centrifuge funnel and osculum end connection with it, be equipped with the cut -off equipment on the fluid -discharge tube, still be equipped with the shunt tubes on the fluid -discharge tube, the shunt tubes is arranged in the cut -off equipment top. Novel centrifuge fluid -discharge tube, through install diverging device and cut -off equipment additional on former fluid -discharge tube, open the shunt tubes during use, make the cut -off equipment closed, can be with sewage discharge to effluent water sump, avoid directly getting into circulation system and destroy the drilling fluid stable performance, risk that the reduction was under construction in the pit.