The core content of futures settlement business is the daily mark-to-market system, that is, the daily debt exemption system. Specifically, there are two aspects as follows: (1) Calculating floating gains and losses. That is, the settlement institution calculates the floating profit and loss of the open positions of the members according to the settlement price of the transaction on that day, and determines the amount of the deposit payable for the open positions. The calculation method of floating profit and loss is: floating profit and loss = (settlement price of the day-opening price) × position × contract unit-handling fee. If it is positive, it means that it is a long floating profit or a short floating loss, that is, the price increase after the long position is a long floating profit, and the price increase after the short position is a short floating loss. If it is negative, it means the floating loss of bulls or the floating profit of bears, that is, the price drop after bulls means the floating loss of bulls, or the price drop after bears means the floating profit of bears. If the margin is not enough to maintain the open position contract, the settlement institution will inform the meeting to make up the difference before the market opens the next day, that is, to add the margin, otherwise it will be forced to close the position. If there are floating profits, members can't put forward the profit part, unless the liquidation contract is closed in the future, and the floating profits become actual profits. (2) Calculate the actual profit and loss. The profit and loss realized by liquidation is called actual profit and loss. Most contracts in futures trading are closed by liquidation. The calculation method of actual profit and loss of bulls is: profit and loss = (closing price-buying price) × positions × contract units-handling fee. The calculation method of short profit and loss is: profit and loss = (selling price-closing price) × position × contract unit-handling fee. When there are risks in the futures market, some members have insufficient trading margin or overdraft due to excessive trading losses. The procedures for dealing with risks in the settlement system are as follows: () (2) If the margin increase is not in place, first stop the members from opening new positions and force them to close their positions; (3) If the balance of the member's margin is not enough to make up for the losses after all liquidation, the member's settlement reserve at the exchange shall be used; (4) If the loss is still insufficient, transfer the membership fee and seat fee of the member;