G20 members include 20 countries and organizations including Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, South Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey, the United States, the United Kingdom and the European Union.

Before the outbreak of the international financial crisis, the G20 only held meetings of finance ministers and central bank governors to exchange views on international financial and monetary policies, international financial system reform, world economic development and other issues.

After the outbreak of the international financial crisis, at the initiative of the United States, the G20 was upgraded to a leaders' summit.

Extended information: Background of the establishment of the G20 was originally proposed by the finance ministers of seven industrialized countries including the United States in Cologne, Germany, in June 1999. The purpose was to prevent a recurrence of the Asian financial crisis and allow relevant countries to discuss international economic and monetary issues.

hold informal dialogues on policies to contribute to the stability of the international financial and monetary system.

At that time, the G20 meeting was only attended by finance ministers and central bank governors of various countries. Since the global financial crisis caused by the United States in 2008, the financial system has become the focus of the world. G20 summits have begun to expand the scope of various countries.

floor, which replaces the previous G8 summit or G20 finance ministers meeting.

As usual, the International Monetary Fund and the World Bank attend meetings of the organization.

The G20's total GDP accounts for about 90% of the world's total, and its population is about 4 billion.