Article 70 of the Measures for the Administration of Futures Companies stipulates that a futures company shall open a futures margin account with a legally approved futures margin depository bank. In the futures market, traders can pay a small amount of money according to a certain proportion of the price of futures contracts as financial guarantee for the performance of futures contracts and participate in the trading of futures contracts. This kind of money is the futures margin. There are two kinds of transactions, trading margin and settlement reserve.