Modern society is a society with risks. Risk is a systematic way to deal with the dangers and insecurity caused by modernization. Unreasonableness and errors in public decision-making, bureaucratic abuse and lack of responsibility are the main causes of social risks. The consequences caused by risks are serious. Therefore, modern society should pay attention to the prevention and control of risks, and establish scientific and effective strategies and principles to avoid risks. The measures and methods to avoid risks include:perfecting rationality, striving to make human "kingdom of necessity" leap to "kingdom of freedom"; perfecting the system to achieve the unity of good system and good governance; awakening conscience; strengthening mission, responsibility and fulfillment.