This topic investigates the investment scope of securities investment trust business in China. 20 1 1 CBRC issued the Guidelines for Trust Companies to Participate in Stock Index Futures Trading, stipulating that trust companies can directly or indirectly participate in stock index futures trading. Among them, the inherent business of the trust company shall not participate in stock index futures trading; Collective trust business can participate in stock index futures trading for hedging and arbitrage purposes; The single trust business of trust companies can carry out stock index futures trading, hedging, arbitrage and speculation.