The new coronavirus vaccine generally refers to the new coronavirus vaccine. Currently, a fourth dose of the new coronavirus vaccine is not required, and the population is advised to take precautions on a daily basis. The new coronavirus vaccine is mainly used to prevent the body from being infected with the new coronavirus, which can effectively reduce the risk of transmission of the new coronavirus. The new coronavirus vaccine is mainly injected intramuscularly in the deltoid muscle of the upper arm. At present, the third injection of the new coronavirus vaccine is carried out in the clinic, and there is no mention of the fourth injection for the time being, so the population does not need to take the fourth injection of the new coronavirus vaccine at present. For those who have not received the new coronavirus vaccine or who have received the full course of the new coronavirus vaccine, they should seek medical attention as soon as possible to complete the vaccination. Take care to stay in the hospital for about 30 minutes after vaccination so that abnormalities such as allergies can be treated promptly. At the same time, it is important to pay attention to local skin care, avoid foreign body friction and irritation, and prevent infection. To prevent infection with the new coronavirus, in addition to active vaccination, good living habits and self-protection should be practiced to avoid close contact with others.