Struggling to recover after a currency crisis earlier this year, Latin America's third largest economy sought the help of the International Monetary Fund -- which approved a USD 56 billion loan package.
Now, this latest agreement will "contribute to greater financial stability and also facilitate trade" between China and Argentina, according to the bank's statement.
A currency swap sees two parties agree to exchange a certain amount of foreign currency at a pre-determined rate, protecting against fluctuations.
The two countries signed 30 trade and financial agreements in total.
"We are extending cooperation on economic, agricultural, financial and infrastructure issues," Xi told a press conference.
After Brazil, China is Argentina's second largest trade partner.
In 2017, the relationship was firmly in Beijing's favor: China exported USD 17 billion of goods to Argentina, while importing USD 8 billion of goods from that country.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)