The exchange rate system of RMB against the US dollar is the real-time exchange rate of working hours on the same day, and the buying price is 6.6928 RMB pair 1 US dollar, which is used for enterprises to settle foreign exchange in banks. The foreign exchange settlement of enterprises in banks is based on the purchase price of 6.6928 RMB pairs 1 USD; The cash settlement of foreign exchange by an enterprise to a bank shall be based on the cash purchase price of 6.695438+0 yuan RMB 1 USD.