London is the oldest international financial center, and almost all major international banks have opened branches in London. Due to its geographical advantages, the trading hours of London and Asian and North American markets are interlinked and partially overlapped, which is convenient for investors from different regions to trade. London's foreign exchange trading volume ranks first in the world, and its trading varieties are very rich. Its exchange rate trend has an important impact on the global foreign exchange market.

New york's foreign exchange market is one of the most important markets in the world, and new york is home to major large financial institutions in the world. The US dollar is the most important reserve and settlement currency in the world. As the clearing center of the US dollar, new york is worse than the London market in terms of exchange rate fluctuation and influence, although it is not as good as the London market in terms of transaction volume. On the one hand, American economic data have a decisive influence on the global financial market, and these data are often released during trading hours in new york; On the other hand, the American stock and bond market is huge, and its trend affects the flow of international funds; The loose financial system in the United States is conducive to financial innovation, which greatly enlivens new york's foreign exchange market.

Tokyo is the most important foreign exchange market in Asia. Tokyo's foreign exchange market ranks third in the world, only next to London and new york. In the Tokyo market, foreign exchange transactions around the yen account for a large proportion.

In addition to the above three major foreign exchange markets. Frankfurt, Singapore and Hong Kong in Germany are also important foreign exchange markets. The foreign exchange market in Asian market is calmer than that in Europe and America. With the opening of foreign exchange markets in Europe and North America, the markets are becoming more and more active.