For stock index futures trading, first, it is required that the available funds in the account should be no less than 500,000 yuan for five consecutive trading days before the application, so as to ensure that investors have sufficient financial background. Secondly, it is necessary to pass the basic knowledge examination of China Financial Futures Exchange with a score of 80 or above, which proves that investors have the necessary theoretical knowledge. Furthermore, investors are required to have some practical experience, and at least 20 stock index futures simulation trading records or 10 commodity futures trading records in the past three years are required to show their trading ability. In addition, investors must not have serious bad credit records to ensure their integrity and reliability. Finally, it must pass the suitability evaluation test and reach C4 level to ensure that investors can understand and bear the risks of futures trading. These conditions * * * are isomorphic to become the comprehensive requirements of the stock index futures account, aiming at ensuring the transaction safety and the legitimate rights and interests of investors.