Lock stock price in the case of the stock market falling, investors can use stock index futures to hedge, to avoid the stock market fell sharply to bring losses to investors. Different risk tolerance, investors can choose different hedging strategies, but must follow the principle of consistent with the type, duration consistent, consistent with the number of opposite direction, otherwise futures speculation rather than hedging the trading leverage the presence of speculators facing huge investment risk hedging principle as long as investors follow You can use stock index futures hedging to avoid the stock price systemic risk purposes.