文中介绍了目前国外较先进的管道内防腐和补口技术，其中包括详细的施工方法、检测手段，并附有插图。在石油管道建设过程中，防腐系统是保证质量和使用寿命的一个重要环节。目前管道外防腐应用比较普遍，技术也比较先进，问题主要集中在管道内防腐管道内外防腐接头的补口技术上。 This paper introduces the current foreign advanced pipeline anti-corrosion and fill mouth technology, including detailed construction methods, testing methods, accompanied by illustrations. In the process of oil pipeline construction, anti-corrosion system is an important link to ensure the quality and service life. At present, the application of anti-corrosion pipelines is more common, and the technology is more advanced. The problems are mainly concentrated in the anti-corrosion pipe fittings inside the pipe.