The foreign income or expenses caused by the import and export of foreign currency in the foreign currency, which is the most important content of the foreign exchange receipts and expenditure, is the trade surplus (black), if the support is greater than the income, it is the trade deficit (deficit);

The foreign exchange income and expenses caused by the export of labor services in the country;

The transfer of foreign exchange receipts and payments, refers to the form of foreign currency assets in the form of unilateral transfer of assets, not including unilateral transfer of physical assets in the form of;

The implementation in the form of foreign currency assets and capital output caused by foreign exchange.