Premature beats are a very common clinical arrhythmia that occurs in a wide range of people, including normal healthy people and patients with various heart conditions. Premature beats occur when a part of the heart emits an impulse earlier than the basic rhythm, causing early depolarization of one or all parts of the heart, thus causing the heart to beat earlier than expected. In general, except for sinus premature contractions that originate from the sinus node, which are normal and rare, other common contractions are divided into three types according to their location: 1) atrial premature contractions; 2) junctional premature contractions; and 3) ventricular premature contractions. The causes of premature beats are complex, and almost 100% of adults have premature beats, but not necessarily all have organic heart disease. The causes of premature beats can be divided into the following two categories: 1. Factors other than the heart, such as stress, excitement, fatigue, lack of oxygen, smoking, alcohol, strong tea, coffee, surgery and other stressful situations can trigger them, as well as certain diseases such as infection, intestinal diseases, biliary diseases or renal colic, hyperthyroidism, electrolyte disorders or acid-base imbalance, and drugs (such as digitalis, quinidine, adriamycin, etc.) can also trigger them; 2. The symptoms of premature beats can be caused by various types of heart disease, such as coronary artery disease, hypertension, pulmonary artery disease, cardiomyopathy, wind heart disease, precordial disease, etc. The most common symptom is palpitations, which are mainly caused by the enhancement of the heart beat after the premature beat and the compensatory interval after the premature beat. Sometimes patients may feel a sensation of pounding in the precordial region, cardiac arrest and dizziness, and touching the pulse may cause a steal stop. If the premature beats are frequent, the compensatory interval is too long or other tachyarrhythmias are triggered, blackness and syncope may occur. The principle of management of premature beats is to improve the symptoms and prevent the occurrence of malignant arrhythmias. We can follow the following principles in the management of premature beats: 1) find the cause of premature beats caused by factors other than the heart, once the cause is eliminated, the premature beats will disappear on their own; 2) exclude heart disease and perform relevant examinations, such as ambulatory electrocardiogram, exercise panel test and coronary angiography, etc., if there is a heart problem, then perform targeted treatment; 3) manage the premature beats themselves, for atrial premature beats and junctional premature beats If there are obvious symptoms, sedatives, β-blockers and calcium antagonists can be given, while for ventricular premature beats, if there are no symptoms and no organic heart disease, no treatment is needed. Radiofrequency ablation can be considered when drug therapy is not effective. In cases of premature beats combined with organic heart disease, only the heart disease is usually treated and, if necessary, beta-blockers, calcium antagonists, amiodarone and lidocaine are administered.