In recent years our domestic securities market has developed rapidly.As the increasingly expansion of market scale,along with the investing subjects changing and capital markets openness degree improving continuously,launching the stock index futures in a timely manner and making a reasonable use of that will not only reduce financial risks,but also further promote the development of stock market.It is predictable that the appearance of stock index futures will definitely and profoundly influence securities investors.Based on the characteristics of stock index futures,this paper expresses its view on the influence and function of domestic stock index futures on individual investors after they are launched.