The new crown vaccine has a certain protective effect on the body and can help reduce the chance of infection by the new crown virus after injection and reduce the chance of the disease developing into a serious illness after infection. Contraindications and precautions for the new crown vaccine are as follows: I. Contraindications 1. If you are in an acute attack of chronic diseases, such as acute attack of chronic obstructive pulmonary disease, acute attack of asthma, etc., it is recommended not to vaccinate; 5. If you have epilepsy or other neurological diseases, do not vaccinate; 6. If you have the manifestation of fever, or have acute infectious diseases, acute cardiopulmonary impairment, it is recommended not to vaccinate. Precautions 1. Stay at the site after vaccination and observe for 30 minutes, and if abnormal discomfort occurs during this period, communicate with the medical staff in a timely manner; 2. Keep the vaccination site clean and dry, avoid scratching with hands, rest well within 24 hours, and do not take a bath; 3. Eat lightly for 1 week and avoid drinking alcohol. If you have a history of allergy, pay attention to stay away from allergens.