The significance is to reduce the loss of foreign exchange risk. The research on the foreign exchange risk of multinational corporations can make multinational corporations more aware of the risks existing in their operations and investments, thus helping multinational corporations to effectively determine risk control measures. The study of foreign exchange risk of multinational corporations mainly considers three aspects: one is to analyze the foreign exchange risk existing in multinational corporations, the other is to analyze the necessity of foreign exchange risk management, and the third is to establish a reasonable foreign exchange risk management mechanism.