With the development of science and technology and the process of globalization, the capital market is becoming increasingly complex and changeable. This situation requires continuous learning, research and response to the noise in the capital market for the small dispersion of our stock market in order to make more wise decisions:First, understand the source of noiseFirst, investors need to know the source of noise. The noise in the capital market mainly includes the following categories:Media coverage disguised as "stock market Darkmouth".In 2008, due to the bursting of the real estate bubble and the outbreak of the subprime mortgage crisis in the United States, the whole financial market suffered heavy losses. Many financial institutions have suffered huge losses because of investing in