The London International Financial Futures Exchange trades by open outcry, that is, the members of the exchange gather in the trading hall, and the party who takes the initiative to buy or sell should publicly indicate the contract, price and quantity to be bought or sold, and then trade with the consent of any trader on the floor. The transaction must be conducted in the lobby. The trading hall is divided into two parts. One is the trading pool, which is located in the center of the trading hall. Only traders recognized by the exchange can trade in the trading pool. The other part is the seat, which surrounds the exchange. Each seat is equipped with telephone, information screen and other communication equipment, and each exchange member has at least one seat for trading. When doing financial futures trading, ordinary customers need to open an account with members of the exchange and entrust members to buy and sell. After accepting the entrustment, the member shall immediately notify the local on-site personnel by direct dial telephone. According to the distance from the trading pool, the floor staff verbally or gestures to inform their traders to trade in the trading pool. After the transaction, the trader will also notify the floor staff verbally or by gesture, and then tell his office to confirm with the customer.