According to the production and operation characteristics of ethylene plants, emergency operation cards were prepared and improved for emergencies such as fire and explosion, hydrocarbon leakage, equipment failure and utilities, and the concept of "one-minute emergency response" was consistently followed, highlighting the criticality, accuracy measures and key points of emergency response. At the same time, effective measures, such as assessing the emergency response principles of the shift supervisor team, carrying out emergency drills for shifts, strengthening training on the use of safety protection facilities and fire fighting facilities for the staff on duty, and developing an annual cyclic drill plan for shifts, were taken to improve the emergency response skills of the staff on duty. As a result, rapid and stable emergency response of the staff on duty was achieved in various emergency events such as steam interruption, avoiding significant load reduction or even shutdown of the unit, ensuring the rapid recovery and smooth operation of the unit, and significantly improving the emergency management capabilities.