Settlement price and closing price are two concepts that are not related to each other. Closing price is the final transaction price. Settlement price refers to the price of a certain variety calculated by using the weighted average price according to the price fluctuation after the close of the day. This price is mainly used in the market where there is no debt settlement on that day, and it is used to settle the profit and loss of the transaction on that day according to the settlement price at the closing time of the market. The settlement price of commodity futures in China is the weighted average price according to the transaction price and volume of futures contracts on the same day. If there is no transaction price on that day, the settlement price of the previous trading day shall be the settlement price of that day.