Nowadays, the competition in the economic business of the futures market is becoming more and more fierce. In order to win high-quality customers, many futures companies will appropriately refund part of the exchange fees to some high-quality customers with large trading volumes or large amounts of funds. In fact, the futures exchange will return the handling fee to the futures company according to a certain proportion every month, which is equivalent to giving subsidies to the futures company and easing the pressure of the futures company in the fierce competition environment.