1, bear the price risk. Futures speculators bear the risks that hedgers try to avoid and transfer, which makes hedging possible.

2. Improve market liquidity. Speculators frequently open positions and hedge their contracts, which increases the trading volume in the futures market, which not only makes hedging transactions easy to clinch, but also reduces the price fluctuations that traders may cause when entering and leaving the market.

3. Keep the price system stable. Commodity prices in various futures markets are highly correlated with the prices of different commodities.