Electric actuated butterfly valve is a kind of valve commonly used in petrochemical, shipbuilding, power station, metallurgy, pharmaceutical and light industry industries. It is mainly used to cut off or control the medium in the pipeline. In the long-term use of electric butterfly valves, it is inevitable that various faults will be encountered, and leakage is one of the more common faults. This article mainly introduces the causes of electric butterfly valve leakage and the corresponding treatment methods.