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The risk control of futures includes several measures to minimize or manage the potential risks associated with trading futures contracts. These measures may include:

1. Margin requirements: Futures exchanges require traders to post a margin deposit, which is a percentage of the contract's value. This margin serves as collateral against potential losses and helps to ensure that traders have sufficient funds to cover their positions.

2. Position limits: Futures exchanges may impose position limits on the number of contracts that traders can hold, in order to prevent excessive speculation and market manipulation.

3. Daily price limits: Futures contracts may have daily price limits, which restrict the amount that the price can move in a single trading session. This helps to prevent extreme price swings and limit potential losses.

4. Stop-loss orders: Traders can use stop-loss orders to automatically close out their positions if the price moves against them beyond a certain threshold. This helps to limit potential losses and manage risk.

5. Risk management tools: Futures traders may use various risk management tools, such as options or futures spreads, to hedge their positions and reduce their exposure to market fluctuations.

Overall, the risk control of futures involves a combination of regulatory measures and risk management strategies to help traders manage potential risks and protect their investments.