The application of swap lines to ensure that banks outside the US can access the US dollar easily, which is becoming difficult for many banks in the world due to the COVID-19 epidemic. In the context of the COVID-19 is caused by the SARS-CoV-2 virus, which is disturbing the global financial market, on March 19, the Federal Reserve Bank of America (Fed) applied swap lines to support the supply of USD to central banks of some countries. The application of a swap line to ensure that banks outside the US can access the US dollar easily, which is becoming difficult for many banks around the world in the context of the epidemic outbreak. Emerging economies have suffered from the negative effects of the wave of