The change of import and export trade of Chinese enterprises actually reflects the appreciation and depreciation of RMB, which are closely related to the total volume of import and export trade of Chinese enterprises and the formulation of corresponding foreign exchange measures.Generally speaking, the rise of the RMB exchange rate means the appreciation of the RMB is conducive to imports, while the decline of the RMB exchange rate means the depreciation of the RMB and the decline of the price of export commodities, so it has a greater price advantage and is conducive to exports. Chinese enterprises should correctly grasp the rise and fall of RMB exchange rate and carry out import and export trade reasonably when developing abroad.