Usually refers to various means of payment expressed in foreign currency that can be used for international settlement. Including: foreign currency, foreign currency deposits, foreign currency securities (government bonds, treasury bonds, corporate bonds, stocks, etc.). ) and foreign currency payment vouchers (bills, bank deposit vouchers, postal savings vouchers, etc.). ).

Foreign exchange is short for international exchange. The concept of foreign exchange can be divided into static and dynamic. Dynamic foreign exchange refers to the financial activity of converting one country's currency into another country's currency to pay off international debts. In this sense, dynamic foreign exchange is equivalent to international settlement. Static foreign exchange is divided into broad sense and narrow sense. Foreign exchange in a broad sense refers to foreign exchange mentioned in foreign exchange management regulations. It refers to all external financial assets. Article 3 of the current Regulations on Foreign Exchange Control in People's Republic of China (PRC) stipulates that foreign exchange refers to the means of payment and assets expressed in foreign currency that can be used for international settlement. Foreign exchange in a narrow sense refers to the means of payment expressed in foreign currency for international settlement.