Abstract: This paper describes data transmission, data exchange and data share of Urumchi-Lanzhou Product Oil Pipeline with downstream pipelines (including Lanzhou-Chengdu-Chongqing Product Oil Pipeline and the future Lanzhou-Zhengzhou-Changsha Product Oil Pipeline etc.) from Lanzhou Terminal Station. The data mainly includes metering data, product oil cut and batch data. fire extinguishment data and storage tanks data. The problems in transmission network safety of data transmission, data exchange and data share are discussed.