Dual-currency card is a kind of bank card that only appeared in China in recent years. With the continuous development of China's economy and the continuous improvement of people's living standards, traveling and shopping abroad has become a very common thing, thus forming a wide demand for bank cards settled in foreign currency. Therefore, many domestic banks have successively cooperated with international bank card organizations such as VISA and MasterCard to launch bank cards with RMB and USD settlement functions. In China, RMB settlement can be realized through UnionPay. After going abroad, you can spend and withdraw cash at ATMs of merchants and banks that support Visa or MasterCard, and settle in US dollars.