Abstract: Oil & gas pipeline transportation plays an indispensable role of energy allocation to global economy development. The construction of oil and gas pipelines is impelled by the rapid rising energy demand of Asian countries and emerging economies, and many multinational pipelines are granted to planning and construction. The pipeline construction all over the world follows the development trend of expanding the energy import and export channels, completing the oil and gas resource distribution pipeline networks and optimizing the transportation networks. In this paper, the distribution situations of global pipelines and the pipeline engineering projects which were being constructed or to be constructed were concluded based on the status and future development trend of oil & gas supply and demand. Then, the ranking of pipeline companies based on pipeline mileage data was investigated according to the types of transported medium, and the future development trend of global oil & gas pipelines was proposed. This paper is of instructive significance to promoting pipeline construction and development in China.