The New Crown vaccine used in China has been validated in clinical trials and has a certain degree of safety. The New Crown vaccine can effectively prevent New Crown pneumonia or reduce the risk of severe New Crown pneumonia. According to China’s New Crown vaccination regulations, elderly people in their eighties can receive the New Crown vaccine normally if they are in good health and have no contraindications to New Crown vaccination. However, vaccination is not recommended in the following cases: people with uncontrolled epilepsy and other serious neurological diseases (e.g. transverse myelitis, Green-Barre syndrome, demyelinating diseases, etc.); people with severe allergic reactions to previous vaccinations (e.g. acute allergic reactions, angioneurotic edema, respiratory difficulties, etc.); people with allergy to vaccine components and excipients; people who are febrile, or suffering from acute diseases, or chronic diseases of acute Patients with fever, acute disease, or chronic disease, or serious uncontrolled chronic disease. For the vaccination of elderly people in their eighties, it is recommended that family members accompany them to the vaccination site and stay there for at least half an hour after the vaccination. Since elderly people in their eighties are relatively weak, they may have adverse reactions after receiving the New Crown vaccine. Therefore, they should be observed if they develop symptoms such as redness, swelling, itching and soreness at the vaccination site, or fever, nausea and vomiting. It is important to inform the doctor in time for active treatment.