Trading code refers to the special code for futures trading between members and customers. The transaction code consists of 12 digits. The transaction code consists of two parts: member number and customer number. The transaction code consists of 12 digits, with the first 4 digits being the member number and the last 8 digits being the customer number. If the customer transaction code is 00 12000000 1, the member number is 0012, and the customer number is 0000001.

A customer can open an account with different members, but there can only be one customer number in the exchange. Transaction codes can only be different among member numbers, and customer numbers must be the same. In order to strengthen market monitoring, some exchanges adopt transaction coding system, which consists of two parts: member number and investor number. Transaction coding system is the basic system of customer management and the source of market risk control. Futures trading code refers to the exclusive code when futures company members and futures investors conduct futures trading.