金融期权是一种权利合约，它是在买方向卖方支付一定的权利金后，赋予买方在规定的时间内按双方事先约定的价格购买或出售一定数量的某种金融资产的权利。换言之，金融期权是买卖双方订立的一种合约，对期权的买方来说，合约赋予他的只有权利而无义务，在合约的有效期内，他既 Financial option is a kind of contract of right, which gives the buyer the right to buy or sell a certain amount of certain financial assets within the prescribed time after the buyer pays the seller a certain amount of royalties. In other words, a financial option is a contract entered into between the buyer and the seller. For the buyer of the option, the contract gives him only the right and no obligation. During the term of the contract, he