Abstract: The different degrees corrosion damage of surface production equipment and distribution pipelines in Tahe oilfield greatly affected the normal oilfield operation in recent years.Based on the corrosion monitoring of built oilfield surface pipelines and the analysis of oil,gas and water,it was found that the crude oil from oil wells containning large amounts of H2S,CO2 and high salinity formation water and other corrosive substances,Adding chemicals protection,cathodic protection,pipeline gathering endpoint dosing techniques and oily wastewater enhanc treatment were taken to ensure the safe operation of oil and gas gathering pipelines.