The ECG indicates that premature beats are heart beats caused by early agitation of the heart’s ectopic pacing point, which is a more common arrhythmia, and the common premature beats are atrial premature beats and ventricular premature beats. 1. Atrial premature beats: The premature agitation of any location of the atrium other than the sinus node, resulting in a heartbeat, is called an atrial premature beat. 2. Ventricular premature beats: premature agitation of any part of the ventricle before the agitation of the sinus node reaches the ventricle causes the heart to beat. Premature beat can be clearly diagnosed by electrocardiogram, occasional premature beat can be seen in normal people, regular review can be; caused by premature beat common physiological reasons are emotional excitement, nervousness, excessive alcohol consumption, etc., common pathological reasons are mostly due to organic heart disease, such as coronary artery disease, myocarditis, valvular disease, etc.. If there is discomfort in the precordial area, chest tightness, shortness of breath and other symptoms, you should consult a doctor in time, improve the electrocardiogram and other tests to clarify the cause of the disease, symptomatic treatment, so as not to delay the condition.