#美国国债 U.S. Treasury securities are debt instruments issued by the U.S. government, managed by the Treasury Department, and backed by the nation's credit, regarded as one of the safest assets globally. They have various maturities, including short-term Treasury bills, medium-term notes, and long-term bonds. Investors are widespread, encompassing central banks, institutions, and individuals from various countries. U.S. Treasury securities have a significant impact on global financial markets, with their yields often serving as benchmark interest rates; however, they also face risks such as the continuous expansion of debt and interest rate fluctuations, which hold considerable implications for the U.S. economy and the international financial landscape.