The invention discloses a stainless steel corrosion-resistant sewage pipeline and a manufacturing method thereof. The thickness of the pipe wall of the stainless steel corrosion-resistant sewage pipeline is 0.5-3mm. The manufacturing method of the stainless steel corrosion-resistant sewage pipeline comprises the following steps: firstly, welding a stainless steel coil end, flatting and polishing; secondly, cleaning the interior and the exterior of the pipeline, brightening, and performing solution annealing; straightening and rounding a semifinished pipeline so as to keep the straightness and the roundness of the pipeline; thirdly, performing eddy current flaw detection to separate out an unqualified substandard product; performing air tightness test and water pressure test, and polishing the interior of the pipeline to keep the air tightness and waterproofness of the stainless steel pipeline; and finally, moulding and packaging. The stainless steel corrosion-resistant sewage pipeline is reasonable in structure; through a welding-seam-free process, the manufacturing process is simple; characteristics of stainless steel itself are fully embodied; and the problem that the conventional corrosion-resistant pipeline is high in maintenance cost is solved.