Article 88 of the Measures for the Administration of Futures Exchanges stipulates that in the course of futures trading, if one of the following circumstances occurs, the futures exchange may declare an abnormal situation and take emergency measures to eliminate risks: (1) Force majeure such as earthquake, flood and fire. Or computer system failure and other reasons not attributable to the futures exchange lead to trading failure; (2) The member has a settlement and delivery crisis, which is or will have a significant impact on the market. (3) Futures prices continue to rise and fall in the same direction, and the risk has not been resolved after taking corresponding measures; (4) Other circumstances stipulated in the trading rules of the futures exchange and its detailed rules for implementation.