Futures margin refers to the funds for buying and selling futures contracts, which are divided into occupied margin and unoccupied margin (also known as available funds). For example, if you use 5,000 yuan to make primary soybean meal, the contract will take up about 3,000 yuan, and the remaining 2,000 yuan is your available funds, but it doesn't mean that you can control this 2,000 yuan freely. Because futures trading is margin trading, it is impossible to operate without the available funds of 2000. Otherwise, once the market fluctuates in the opposite direction, you will explode.