The impact of COVID-19 on the economy is exogenous and short-term，and has not changed the fundamental factor of economic growth. The impact of COVID-19 on the economy is both demand side and supply side，but mainly on the supply side. On the premise of epidemic prevention，by increasing investment，especially the investment in the industrialization of new scientific and technological achievements，we can not only expand demand，but also increase effective supply，so as to promote stable economic growth and achieve high-quality development.