According to the different content and strict degree, it is generally divided into three types: 1. Countries and regions with strict control.
Such countries are typically characterized by an extreme shortage of foreign exchange, economic underdevelopment or backwardness in foreign trade, as are most developing countries and countries with centrally planned economies.
2. Countries and regions under partial foreign exchange control.
Such countries do not control current account foreign exchange payments by non-residents but restrict capital account transactions.
For example, some developed countries or relatively open developing countries.
3. Countries that have nominally abolished exchange controls but still maintain them to varying degrees.
As of 1991, there were more than 20 countries in this category, mainly industrially developed countries and oil exporting countries.