Three atrial and one ventricular premature beats are normal on an ambulatory electrocardiogram. Premature beats can be categorized morphologically into atrial, junctional and ventricular premature beats, and in terms of frequency into episodic premature beats and frequent premature beats. 24-hour ambulatory electrocardiograms, the total number of beats in a normal person is around 70,000 to 130,000 beats. If the number of premature beats is greater than 10% of the total number of beats, it is considered frequent, and less than 10% is considered episodic. Episodic premature beats are usually caused by psychological factors and do not need to be treated. If you suffer from organic heart disease such as coronary heart disease, wind heart disease, cardiomyopathy, myocarditis, etc., premature beats are caused by organic heart disease, so you need to treat the primary disease first, not premature beats. People will have more or less premature beats to varying degrees throughout their lives. If they have frequent premature beats or the patient has obvious discomfort, they need to go to the hospital, get a clear diagnosis, and get symptomatic treatment. If there are only a few premature beats, no treatment is needed, regardless of the form of premature beats.