Futures liquidation refers to the behavior of futures traders to buy or sell futures contracts with the same variety code, quantity and delivery month but opposite trading direction, and then liquidate their positions.

Hedging liquidation refers to futures investors buying and selling futures contracts in the same delivery month on the same futures exchange, so as to liquidate futures contracts previously sold or bought. Forced liquidation refers to the forced liquidation of the position of the holder by a third party other than the holder (futures exchange or futures brokerage company), also known as liquidation or liquidation.