The invention discloses a device and method suitable for treating drilling cleaning production waste along with drilling without falling to the ground and relates to the technical field of drilling waste treatment. The device comprises an end to be cleaned, a spiral conveyer and/or a screw pump, a rock debris pipe conveying device and a stirring tank and/or a solid-liquid phase separating device which are connected sequentially through a conveying pipeline; and a solid treatment area and a recycling pipeline are connected at the rear end/ends of the stirring tank and/or the solid-liquid phase separating device. The stirring tank and the solid-liquid phase separating device each comprise a liquid phase output opening and a solid phase output opening. The liquid phase output openings pump liquid phases separated by a solid-liquid phase separating area to the recycling pipeline through a sewage pump. The solid phase output openings send solid phases separated by the solid-liquid phase separating area to the solid treatment area through the conveyer and/or excavating equipment. The waste of the end to be cleaned is treated effectively through conveying and respective treatment of the solid and liquid phases.