介绍了生产、生活污水管线改造采用的高密度聚乙稀管 (HDPE)穿插技术和翻衬技术 ,指出了管道穿插技术和翻衬技术更新旧管线技术先进、施工方便、速度快、费用低、社会效益好 ,具有很高的应用和推广价值 The high-density polyethylene pipe (HDPE) interpenetration technology and reverse lining technology used in the transformation of production and domestic sewage pipelines were introduced. It was pointed out that the pipeline interpenetrating technology and the lining lining technology were advanced in renovating the old pipelines, the construction was convenient, the speed was fast, and the costs were low. Good social benefits, high application and promotion value