Supraventricular premature beats are defined as premature beats that originate above the ventricles and can occur in patients with organic heart disease or in healthy individuals. Supraventricular premature beats are a common clinical arrhythmia, including atrial premature beats that originate in the atria and atrioventricular junctional premature beats that originate in the atrioventricular junctional zone. The symptoms of supraventricular premature contractions are usually palpitations, chest tightness and a feeling of cardiac arrest, but many patients with supraventricular premature contractions have no obvious symptoms during the attack. The diagnosis and classification of supraventricular premature beats are based on the electrocardiogram or ambulatory electrocardiogram. The frequency of premature beats can be divided into episodic premature beats with less than 5 beats/min and frequent premature beats with more than 6 beats/min. Episodic premature ventricular contractions have no significant health effects and can be treated without medication when the symptoms do not affect normal life, but only by improving lifestyle and avoiding triggers such as alcohol, exertion, emotional stress and anxiety. Frequent or severe supraventricular premature contractions and atrial premature contractions that may trigger other atrial arrhythmias should be treated with further medication or catheter radiofrequency ablation under medical supervision. The majority of premature supraventricular beats have no health consequences and should not be overly stressed when detected. Most of the supraventricular premature contractions, including atrial premature contractions and atrioventricular junction premature contractions, do not have any significant health effects.