Premature ventricular contractions are usually caused by an abnormal excitation point in the ventricle, which triggers a premature contraction of the ventricular muscle to complete an early cardiac cycle. The frequency of ventricular premature contractions refers to the number of premature ventricular contractions >5 times/min, which can be divided into frequent ventricular premature contractions and episodic ventricular premature contractions according to the number of premature ventricular contractions. 1, frequent ventricular premature beats: 1, physiological factors: the patient is due to conduction bypass or excessive smoking and drinking factors that lead to ventricular premature beats, conduction bypass can be considered to perform radiofrequency ablation surgery to treat ventricular premature beats, usually to control smoking and drinking alcohol, less strong coffee, improve sleep quality, generally correct the cause of frequent ventricular premature beats can be restored; 2, pathological factors: including cardiovascular disease, severe electrolyte disorders, hyperthyroidism, digitalis toxicity and many other diseases. If frequent ventricular premature beats are induced by clear underlying diseases, the patient should be treated for the underlying causes, and the premature beats may disappear on their own after eliminating the causes; for frequent ventricular premature beats caused by electrolyte disorders, timely correction of electrolyte disorders should be considered to prevent more serious arrhythmias; for frequent ventricular premature beats caused by digitalis poisoning, the drug should be stopped immediately and phenytoin sodium should be injected intravenously as prescribed by the doctor. Episodic ventricular premature beats: Normally, ventricular premature beats should not occur in normal people, but under stressful conditions such as emotional excitement, overexertion, exercise or emotional tension and anxiety, episodic ventricular premature beats may occur, which do not affect the life of the patient and generally do not require treatment.