1. Dual-currency credit card is a credit card with RMB and USD (Euro) settlement accounts, and its function is basically the same as that of single-currency credit card.

2. Dual-currency card is a kind of bank card that only appeared in recent years. With the continuous development of 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.