According to the current closing price of the main contract m1309 calculated 3374: 3374 * 10 (10 tons per hand) * 13% (roughly, depending on the futures company) = 4386.2 yuan / hand. If it is 10%, it is 3374*10*10% = $3374/lot. Futures is the day of the debt-free settlement system, that is to say, every day to you to calculate the winners and losers, so the margin is also calculated in accordance with this formula: contract settlement price * 10 * 13% = XX yuan / hand. Therefore, soybean meal rose, the natural margin will also be increased, and vice versa, the margin will be reduced accordingly. But for trading, the focus is not here, the margin is not actually where the risk is, the risk lies in your available funds, which is the focus you should pay more attention to.