1. Policy level: 1994 prohibits foreign exchange deposit business, which is the policy level.

2. Realistic level: the negative impact on society and the excessive loss of participants are realistic.

Foreign currency is the creditor's rights held by the monetary authorities in the form of bank deposits, treasury bonds of the Ministry of Finance and long short-term government bonds. Can be used when the balance of payments is in deficit. Foreign exchange mainly includes foreign currency, foreign currency deposits and foreign currency securities. It is an important part of a country's international reserves and the main means of payment to pay off international debts.

The foreign exchange margin business originated in London in the 1970s. At first, foreign exchange transactions required a large amount of principal funds, so the main participants in this field were large institutions such as banks, financial institutions and governments.