Abstract: This paper generally describes the systematical investigation and study on the status quo of oil and gas pipelines rehabilitation, rehabilitation methods, materials and/or equipments, especially in the North America and Russia. The authors consider that the investigation report is important and instructive for introducing foreign pipeline rehabilitation technology, mechanical equipment and something like that to China and ensuring the rehabilitation capacity, quality and progress, especially the important reference to China's eastern oil pipeline network in technical reform to realize a 20-year's safe operation.