Explain it to you in a popular way:

Futures, like stocks, are always changing in price, with ups and downs. If you feel high, you can "short", and if the price is really as low as you expected, you can make a profit. On the contrary, if the price is low, you can "do more" (the mechanism of doing more is the same as that of domestic stock operation).

Option is another product. Generally, there is no standardized contract, and buyers and sellers of options can negotiate the price of the contract.

For example, A has seen one more stock (while B is bearish), but he is afraid to buy it now because he is worried that its market outlook will go down. At this time, Party A can sign an option contract with Party B: In July of 20 10, Party A bought the stock from Party B at the price of 10 yuan. And B will charge A a certain option fee as a performance reward.

At this time, no matter how much the stock rises (even 1000 yuan), B must be sold to A at the price of 10 yuan. But if the stock falls below 10 yuan, A may not execute this contract, and his loss is only the option fee.

Derivatives are a colorful and complex market. Its pricing principle requires advanced mathematical knowledge. If you are interested, you can read John Hull's Futures, Options and Other Derivatives.

I hope it helps you!