Can be inoculated. Atrial premature beats and ventricular premature beats are the most common cardiac arrhythmias. Premature beats can occur in normal people, and are more likely to occur in patients with cardiac neurosis and organic heart disease, and episodes can be triggered by emotional excitement, nervousness, fatigue, dyspepsia, excessive smoking, drinking alcohol or strong tea. The Guidelines on Contraindications and Precautions for New Crown Virus Vaccination (Second Edition) states that patients with heart disease (arrhythmia, congenital cardiovascular disease, myocarditis, aortic dissection, etc.), coronary heart disease, coronary atherosclerosis, etc., who are not suffering from an acute attack, and whose condition has improved and stabilized, are eligible for the New Crown Vaccine. If the patient has chest tightness, tightness of breath and other uncomfortable symptoms, it is recommended to seek medical treatment first, until the condition improves and stabilizes before vaccination. If the patient does not have any symptoms, he/she can receive the New Crown Vaccine as normal. After the vaccination, observe the patient in place for 30 minutes and leave the hospital and go home after he/she has no symptoms.