The debt-free settlement system of the day, also known as "marking the market day by day", is based on the principle that the settlement department will settle the profit and loss, trading margin, handling fees, taxes and other expenses of all contracts for members and investors at the settlement price of the day after the daily transaction, and make a net transfer of accounts receivable and payable, and increase or decrease the margin accordingly. After the transaction, once the margin balance of members or investors is lower than the prescribed standard, they will receive a notice of additional margin, and the difference between them is the amount of additional margin. In the Detailed Rules for the Settlement of China Financial Futures Exchange (Draft for Comment), the settlement is classified, that is, CICC settles the settlement members according to the principle of debt-free settlement on the same day, and after the settlement at this level is completed, the settlement members settle the investors and non-settlement members according to the principle of debt-free settlement on the same day; Non-settlement members settle investors according to the same principle. In intraday trading, CICC conducts trial settlement of members' positions at real-time prices, and has the right to require members with large floating losses to add margin within a specified time, and stop opening new positions for members who fail to make up in time.