Judging from the regional scope and peripheral speed of foreign exchange transactions, the foreign exchange market has two basic characteristics: spatial unity and time continuity.

The so-called spatial unification refers to the use of modern communication technologies (telephone, telegraph, telex, etc.) in foreign exchange markets of various countries. ) foreign exchange transactions, so that the relationship between them is very close, the whole world is more and more linked together, forming a unified world foreign exchange market.

The so-called time continuity means that the foreign exchange markets in the world alternate with each other in business hours, forming a circular operation pattern. The component of the foreign exchange market is a trading company or individual who uses its own funds to buy and sell foreign exchange bills to obtain the bid-ask difference. Most foreign exchange dealers are operated by trust companies, banks and other institutions 24 hours a day, and the market is characterized by global market and 24-hour intermittent aging.