The U.S. economy in 2020 was characterized by great recession affected by the epidemic and slow recovery with lessen momentum. Specifically，the macro economy has the following performances：the private consumption expenditures fall with services spending sluggish；investment is weak，but it is still the main force contributing to GDP in the fourth quarter；Trade shrank and the deficit reached a new high since the 2008 financial crisis；government expenditure increases while the contribution to GDP increases first and then decreases；The price level first falls and then rises，and there is no risk of large-scale inflation for the time being；The labor market continues to be weak，which has a great impact on the employment rate of low-income population；The financial market fluctuates greatly，and the yield curve of national debt declines；Real estate and manufacturing industry are the bright spot of U.S. economy recovery under the epidemic. In 2020，the core of U.S. economic policy is seeking the balance between epidemic prevention and economy restart. Looking forward to 2021，under the existing policy framework of the United States，if the epidemic can be effectively controlled，the U.S. economy will show a recovery trend.