Exchange rate is determined and affected by demand and supply in foreign exchange market, current account balance, monetary policy, prices of related assets, economic base, national income, and international balance of payment, etc. 汇率的决定与外汇市场供求、经常账户平衡、央行货币政策、相关资产价格、经济基本面、国民收入及国际收支账户等有着直接的或间接的关系。