Futures pledge is futures margin. Futures margin refers to that in the futures market, traders must pay a small amount of futures margin according to a certain proportion of the futures contract price to ensure the performance of futures contracts. Futures margin can be divided into settlement reserve and trading margin according to its nature and function. The margin level charged by the exchange for designing the Shanghai and Shenzhen 300 index futures is 65438+ 0.2% of the contract face value. The ownership of the transaction shall be adjusted according to the market risk.