Settlement of foreign exchange refers to the settlement of purchase and sale of foreign exchange by enterprises or individuals according to the exchange rate. According to the needs of import business, professional import and export companies buy foreign exchange from professional foreign exchange banks in their own currency according to the foreign exchange quotation published by the state, or sell the foreign exchange obtained from export to foreign exchange banks at the quotation price and convert it into their own currency. This behavior is called foreign trade settlement. Settlement of foreign exchange facilitates the management of funds and the circulation and operation of monetary funds.