With the continuous expansion and evolution of the global epidemic, many countries except China have been releasing worrying data. In particular, the United States has taken the lead in increasing the global total by a huge amount every day to more than 2.4 million cases in late April, which has led agencies to predict that the global economy will enter a recession state. In the past, U.S. stocks continued to melt, unemployment data continued to increase, U.S. crude oil prices entered a "negative era" from low innovation until late April, and domestic GDP data in the first quarter dropped sharply. In the process of global worries about a sharp economic downturn and a common fight against the epidemic, the U.S. adopted unlimited QE measures, and countries continued to relax market liquidity and cut interest rates and lowered standards. As a result, the entire capital market has abundant capital flows. It is also in this capital environment. As a big copper country, China has stabilized and increased its demand to attract more capital. The copper market has fallen to a low level and rebounded to a low level in 2016. The fluctuation range from March to April is 4,371 to 5,248 US dollars, with the fluctuation range reaching 900 US dollars. The copper price has fallen by about 60% since April 20, when it rebounded. However, crude oil entered the "negative times" and temporarily ended the rebound. The market entered the profit wait-and-see period.