(1) American option contracts can be performed at any time before or after the expiration date, and the settlement date is one or two days after the expiration date. Most American option contracts allow the holder to perform at any time between the trading day and the performance date, but some contracts stipulate a relatively short period, such as "two weeks before the expiration date".

(2) The European option contract requires its holder to perform the contract only on the due date, and the settlement date is one or two days after the performance. At present, domestic foreign exchange option trading adopts European option contract.

By comparison, the conclusions are as follows: European options make less profit, but they are not flexible in the time of profit; Although American options are flexible, they are very expensive to pay. Therefore, at present, most international options transactions are European options.