1. Gain from fluctuation in foreign currency exchange rate.

2. Loss from fluctuation of foreign currency exchange rate.

3. Forex trading is a of another of foreign currency exchange rate.

4. The reform of the foreign currency exchange system needs further deepening.

5. Maintain foreign currency exchange rate on quarterly basis in QAD.

6. Nevertheless, there still remain many problems, such as , some passiveness of the central bank's interference in foreign currency exchange, and the lack of resilience of changes of exchange rate.