Stock index futures adopt margin system, which has the leverage of funds. Simply put, you can use 1 1,000 yuan to buy 1 1,000 yuan futures. You can make a lot of money if you do it right, and the loss will be amplified if you do it wrong. Moreover, stock index futures are settled daily, and when the margin is not enough, they will be forced to close their positions. So the risk is very high. ETF is a fund with a certain stock index as the target, and positions are allocated in strict accordance with the proportion of the stock index. In a unilateral bull market, buying ETFs is more profitable than buying stocks, and it is relatively stable. However, it is not easy to make money in the turbulent market. If you hold it for a long time, you can never make stock index futures. You can consider ETF.