The survival time of novel coronaviruses after leaving the human body varies greatly on the surface of different objects and needs to be analyzed on a case-by-case basis. Studies have shown that the novel coronavirus survives for only 3 hours in aerosols, 4 hours on copper surfaces, 24 hours on cardboard, and 9 hours on human skin surfaces. Studies have shown that the virus can be completely inactivated on the skin in 15 seconds with 80% alcohol. In the case of 75% alcohol, the virus can be killed in less than 5 minutes. Therefore, proper hand hygiene using ethanol disinfectant can rapidly inactivate the virus. In addition, temperature and humidity have an effect on the survival of novel coronaviruses in vitro. It was found that dry novel coronavirus survives for 3-5 days at room temperature, only 1 day at 37°C, and more than 14 days at 4°C. Novel coronaviruses in solution can survive for 7 days at room temperature, 1-2 days at 37°C, and more than 14 days at 4°C. It can be seen that the survival time of novel coronavirus varies on the surface of different objects in the in vitro environment and is also influenced by environmental factors. Therefore, special attention needs to be paid to hand hygiene and cleanliness to reduce the contact transmission of novel coronaviruses.