Abstract: This paper introduces the optimized operation mode of Shaanxi-Beijing Gas Transmission Pipeline System. The Shaanxi-Beijing Gas Transmission Pipeline System, with six consumers, two supply points, four compressor stations and three gas storages, is a very complex gas transmission pipeline system, which makes the pipeline's operation more difficult. So, the optimized operation mode for the compressor stations along the trunkline, gas storages and gas supply of consumers is analyzed.