The U.S. "strong dollar policy" is the main cause for the substantial depreciation of currencies in many countries, especially those emerging economies, according to analysts.
The policy leads to the U.S. dollar appreciation, drawing capitals back from the emerging markets. This will put emerging economies as well as global economy at risk.
Several countries in Asia have been suffering from it, such as Japan, South Korea and Indonesia, analysts say.
The Japanese central bank on Friday maintained its policy rate unchanged.
The Bank of Japan (BOJ) decided to guide short-term interest rates in a range of zero and 0.1 percent, a month after it ended the negative interest rate policy in its first rate hike in 17 years.
The announcement weakened the country's currency against the U.S. dollar significantly.
According to a media report on Monday, the exchange rate of the yen against the U.S. dollar dropped sharply, hitting the lowest level in 34 years.
Since currency is the medium of exchange, its stability has played a crucial role in business, trade and livelihood. Especially under the circumstance of globalization, the substantial currency depreciation in a short period of time will cause severe impacts on nations.
In Japan, the depreciation has led to rising import costs and higher consumption spending. Some local analysts believe that prices of food and gasoline will grow again.
Since its food and energy highly rely on imports, South Korea has been suffering from high inflation due to the depreciation of its currency -- South Korean won.
Not only has it put more burden on people's livelihood, but also has triggered capital outflow as well as disturbance in financial market.
For countries like Indonesia and Vietnam which often have deficits, as well as high inflation rates and external debts, the depreciation of their currencies has made their repayment of debt and interests even more difficult, posing greater risks to their economic stability.