The trade surplus makes the foreign currency supply in the domestic foreign exchange market exceed the foreign currency demand, which will inevitably lead to the expectation of foreign currency depreciation and RMB appreciation. Therefore, the trade surplus produces the pressure of RMB appreciation: the greater the trade surplus, the greater the pressure of RMB appreciation; The expectation of RMB appreciation has increased the inflow of foreign capital and the expansion of the trade surplus, further enhancing the pressure of RMB appreciation.

The size of the trade surplus largely reflects a country's foreign trade activities in a specific year. At the same time, a large amount of foreign exchange surplus usually leads to the increase of local currency in a country's market, which is easy to cause inflationary pressure and is not conducive to the sustained and healthy development of the national economy.

: trade surplus (or trade surplus). The so-called trade surplus means that the total export trade of a country is greater than the total import trade in a particular year, which is also called "surplus".

Trade surplus refers to the fact that within a certain unit time (usually calculated on an annual basis), both trading parties buy and sell various commodities and import and export each other. Party A's export amount is greater than Party B's, or Party A's import amount is less than Party B's. This difference is called trade surplus for Party A, and on the contrary, it is called trade deficit for Party B. The more trade surplus is not necessarily a good thing, and excessive trade surplus is a dangerous thing, which means that economic growth is too dependent on foreign countries.

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The appreciation of RMB cannot solve the trade surplus.