There are both pros and cons to having a strong currency. When a currency is strong it is less expensive, relatively speaking, to purchase the goods and services from the country with the weaker currency. Conversely demand for the goods and services in the country with the strong currency will typically decline because those goods and services are more expensive to the countries with weaker currencies. On a broader scale a strong currency for a long period of time could lead to businesses moving overseas to lower the price of their goods and services to other countries.