Personal firm speculation in foreign exchange refers to the freely convertible foreign exchange (or foreign currency) transactions conducted by individual customers in banks. Personal speculation in foreign exchange is generally divided into firm offer and fake offer. At present, according to the relevant national policies and regulations, foreign exchange speculation can only be carried out on a firm offer, not on a virtual offer. Personal firm foreign exchange speculation is also called firm trading, because investors must hold enough foreign exchange to trade. Compared with the internationally popular foreign exchange margin trading, it lacks the short selling mechanism and financing leverage mechanism of margin trading, so it is also called firm trading. There are two kinds of foreign exchange speculation, one is the firm trading of banks, and the other is the firm speculation of foreign exchange by individuals, commonly known as foreign exchange treasure. It refers to the non-overdraft freely convertible foreign exchange (or foreign currency) transactions conducted by individual customers in banks through counter service personnel or other electronic financial services. Personal firm speculation in foreign exchange is a trading business, the main purpose of which is to earn the exchange rate difference.