The prevention of foreign exchange risk means that enterprises make corresponding decisions according to the possible changes of exchange rate in the foreign exchange market and take effective measures to slow down or eliminate the impact of foreign exchange risk on enterprises. The main methods to guard against foreign exchange risks are:

(1) spot foreign exchange transactions;

(2) Forward foreign exchange transactions.

(3) Currency swap foreign exchange transactions;

(4) Trading of foreign exchange options;

(5) Balance of assets and liabilities method;

(6) the mode of fund dispatching; (7) currency selection method;