Sino-US trade war and COVID-19 epidemic are historic events in the process of China’s rise. The former is to suppress China’s rise in an all-round way

while the latter is to break out in China and put China at a very unfavorable position.And under this big background

the outbreak of a trade war and for individual companies and what are the practical impact

this paper chooses an overseas accounted for larger instrumentation science and technology research

through the financial analysis and event study analysis whether the two events couplet the extent of impact of science and technology

and provides the suggestion for the enterprise

The hope is to make businesses better able to deal with such incidents.