The management of customers' futures funds is the management of margin. At present, futures contract trading is actually margin trading. Margin management is an important part of futures trading. While paying attention to the market, it is necessary to manage the margin of opening and closing positions and/or positions in time. When you think there is idle margin, you can use it at any time, but when you want to trade margin, you must consider the changes in the futures contract market where you hold positions, otherwise, when you only trade margin.