Abstract: In order to enhance the control ability of gas leakage defects in Sulfur hexafluoride electrical equipment, the distribution and trend of gas leakage defects in Red River Power Grid in recent years were statistically analyzed, and three typical defects were selected for analysis. The operation and maintenance experiences in recent years were shared, the improvement measures of defect operation and maintenance management are put forward, and the feasible measures to improve the detection rate of Sulfur hexafluoride leakage points are discussed.