Abstract
Due to the relatively short history of the development of the Chinese stock market, the investment philosophy and psychology of most individual investors are not particularly mature. Especially under the influence of public health emergencies, the individual investors' characteristic of the investment behavior in the stock market has become more obvious. This paper combines questionnaire and psychological experiments to study the factors that affect investment decisions of individual investors, and then takes COVID-19 as an example to analyze the impact of public emergencies on individual investors’ investment decisions in the stock market.