China's oil and gas pipeline network is mainly monopolized by PetroChina, Sinopec and CNOOC. Among them, as of the end of 2017, the total mileage of oil and gas pipelines operated domestically by PetroChina was 85,600 kilometers, accounting for 68.9% of the domestic crude oil pipelines, 76.2% of the natural gas pipelines in the country, and 43.2% of the refined oil products pipelines in the country. The establishment of the national oil and gas pipeline network company is the most significant and fundamental reform measures in the reform of the natural gas system, which will promote the oil and gas market, the oil and gas market system is expected to be more standardized, systematic, and more diversified domestic supply main body, which is also conducive to speeding up the pace of investment in pipeline network construction, promote pipeline network interconnection, and thus improve infrastructure operation efficiency and reduce the cost of gas consumption for end-users.