As the epidemic situation, including that in the United States, has intensified, the Federal Reserve has issued the most radical measures: unlimited quantitative easing (QE) to open a new chapter of "banknote printing". In addition, foreign countries have also continuously issued measures to rescue the market in addition to epidemic prevention. Copper prices have rebounded more than once due to short-term capital. However, the extent of rebound is generally affected by psychological pressure and worries about economic impact. Judging from the current situation, the overall environment is still affected by the epidemic situation, which is exerting great pressure on the global economy, and there is still room for further downward trend of copper.