Abstract: Waste water from oil field presents high salinity and strong corrosiveness, and will be a serious corrosive medium to pipeline. In order to prevent pipeline from corrosion, pipeline plastic film inner lining is applied and fine result is obtained through several engineering practices. The article introduces construction process of the plastic film inner lining and its characteristics of short construction term and low cost by comparison. Pipeline plastic film inner lining technology is a new construction method for oil field pipeline rehabilitation.