Brokers exist because participating in futures trading requires traders to have strong professionalism, and most traders lack understanding of futures companies and related businesses and professional knowledge of futures trading. Therefore, someone needs to actively introduce futures and futures companies to investors through him, and use his professional knowledge to help customers analyze and predict the development of the market, so that investors' funds can increase in value as safely as possible. The work of futures brokers is generally divided into two categories: one is to find new customers and recommend futures investment to suitable investors through visits and explanations, and the other is to analyze the market, predict the trend and help customers formulate reasonable trading strategies. These two jobs are interdependent and inseparable, because futures intermediaries can't be reflected in the market if they don't have suitable customers, and become flowers in the water and the moon in the mirror. There are also suitable customers who do not have a good level of analysis and prediction. Customers' funds cannot be increased or even lost, and customers will soon be lost and become empty baskets. Although the work of some companies' intermediaries will be partially divided, most of them are combined into one. So the work of the middleman is meticulous and trivial.