"The recent depreciation of the yen is rapid and one-sided. This type of yen weakness makes it difficult for companies to draw up business plans and raises uncertainty so it is negative for the economy and unfavorable," Kuroda said at parliamentary session in the upper house, as quoted by the Japanese news agency Kyodo.
On Wednesday morning, the exchange rate of the yen fell to 149.2 against the US dollar, the lowest since 1990.
The lower the exchange rate of the yen, the higher the possibility of government intervention in the market and its impact on the economy.