In fact, the futures month is for investors' reference. The futures period is meaningless. Just like the stock market, check the previous market. Every futures contract has to be stored for several months. I want to see the trend over a period of time and see continuity. At present, IF 1005 and other contracts end at the end of may, 1006. It is convenient for investors to check this month's contract indicators. Similarly, the reference significance of contract analogy index for delivery every other quarter 1005 105. Now, stock index futures can reflect that mature markets should be based on contracts, and the forecast ratio of monthly index is10/2. The contractor guessed that the so-called main contract was pre-delivery, and it was transferred near the contract period recently. Now it is 300 points in Shanghai and Shenzhen, 3 180. The Shanghai-Shenzhen 1005 point of 3226 indicates that the expected equilibrium point of the Shanghai-Shenzhen 300 Index at the end of May is 3226, indicating that economists compare the current contract targets of the Shanghai-Shenzhen 300 Index and the IF series of stock index futures.