Futures, abbreviated as SPIF in English, refers to stock price index futures, also known as stock price index futures and futures, and refers to standardized futures contracts with stock price index as the subject matter. Both parties agree that the target index can be bought and sold according to the size of the stock price index determined in advance on a specific date in the future. Dayou Stock Index Futures Analyst Net points out that the two sides are trading the stock index price level after a certain period of time, and the delivery is carried out through the cash settlement difference. As a type of futures trading, stock index futures trading and general commodity futures trading have basically the same characteristics and processes. Stock index futures are a kind of futures. Futures can be roughly divided into two categories: commodity futures and financial futures.