Futures is a margin system with its own leverage. If you don't pay the deposit, it means you can't buy or sell futures. In the futures market, investors can participate in the trading of futures contracts only by paying a small amount of funds according to a certain proportion of the futures contract price as the fund guarantee for the performance of futures contracts. This money is a futures deposit. In layman's terms, it means the same as how to pay a deposit for something. For example, this thing is worth 50 thousand, and now you only need 5000 to buy and sell it. Xia Bo