Medical alcohol at a concentration of 75% is effective in killing the new coronavirus in 1 to 2 minutes. When using alcohol for sterilization, attention should be paid to the alcohol concentration. Alcohol concentrations of about 75% have the highest sterilization efficiency and can effectively kill novel coronaviruses in 1~2 minutes. Alcohol concentration is too low, not enough to make the pathogen protein coagulation, can not achieve the sterilization effect; alcohol concentration is too high, will form a protective film on the surface of the pathogen, but blocked access to the pathogen, also can not achieve the sterilization effect. According to the ninth edition of the new coronavirus pneumonia diagnosis and treatment program, in addition to the use of 75% alcohol, when the temperature reaches 56 ° C to maintain more than 30 minutes, the use of ultraviolet light irradiation for more than 30 minutes, chlorine disinfectant, chloroform, ether, peroxyacetic acid and other lipid solvents can be effective in inactivation of the new coronavirus. New coronavirus pneumonia focuses on prevention, daily life should pay attention to diligent hand washing, wear a mask, reasonable diet, active exercise, ensure adequate sleep, improve immunity, avoid gathering in crowded places, timely vaccination. Tip: “New coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.