American futures index refers to the index of futures varieties traded in the United States, which is a portfolio composed of multiple futures contracts, reflecting investors' reaction to market performance. American futures index is managed by Futures Trading Commission (CFTC) and American Futures Exchange (CME). It is a complete portfolio, including stock index futures, precious metal futures, oil futures, currency futures, agricultural products futures and interest rate futures. The price of American futures index consists of futures contract prices traded by investors in the futures market, which reflects investors' reaction to the market. The price of American futures index is influenced by the world political and economic environment. Therefore, investors need to be familiar with the global political and economic environment in order to effectively use the US futures index for investment. The main advantage of American futures index is its high liquidity, and investors can realize large returns in a short time, but investors also need to consider the risk of market fluctuation. In addition, the structure of American futures index is relatively simple, and investors can choose the appropriate futures contract according to their investment objectives and risk tolerance, so as to obtain greater returns.