There must be a large number of "third party" transactions in major international currencies. The experience of US dollar foreign exchange market tells us that foreign exchange transactions related to trade and direct investment only account for 5% of all US dollar foreign exchange transactions. However, if a currency is to be used as an international trade and investment settlement tool (including between two non-domestic regions), an international commodity pricing tool, a financing investment tool and a foreign exchange reserve, since most of these transactions have nothing to do with the domestic real economy, it will provide greater convenience for participants to conduct these transactions in overseas offshore markets. This specific international use of international currency is called "third party use". Due to convenience and other reasons, such financial services basically occur in the offshore market.

This kind of transaction is called the third-party money market.