The four elements of a contract are contract object, contract value, quotation unit, minimum change price and contract month.

1, contract object: that is, the basic assets of futures contracts, such as the basic assets of stock index futures contracts are the price index of stock index futures.

2. Contract value: the contract value is equal to the product of the index point of the market price of the stock index futures contract and the contract multiplier.

3. Quotation unit and minimum change price: the quotation unit of stock index futures contract is the index point, and the minimum change price is the minimum change range of the index point.

4. Contract month: refers to the month when the futures contract is due for delivery.