Atrial premature beats do not have a normal range, usually can be diagnosed as long as the early appearance of atrial P-waves on the electrocardiogram, usually do not need to be treated clinically, only in the presence of obvious clinical symptoms, or accompanied by other arrhythmia treatment. Therefore, there is no normal range of atrial premature beats, and the need for treatment depends on the clinical symptoms and the number of premature beats within 24 hours. Atrial premature beats can occur in a variety of circumstances, such as electrolyte disorders, heart disease, endocrine diseases, healthy people, etc. Modern clinical research has found that about 60% of healthy people will have atrial premature beats, which are commonly seen in cases such as smoking, drinking alcohol, strong tea, coffee, strenuous exercise, emotional fluctuations and so on, and usually when the above factors are removed, the atrial premature beats will disappear without any impact on the function of the heart. Therefore, clinically there is no normal range of atrial premature beats, mainly depends on the clinical symptoms and the number of 24 hours, only in the emergence of obvious chest tightness, shortness of breath, chest pain and other symptoms, or induced other tachyarrhythmias, such as ventricular premature beats, tachycardia, such as the use of medication, such as metoprolol, caused by cardiovascular disease, psychological disorders, or endocrine diseases, generally recommended active treatment of the primary disease. It is recommended to learn about atrial premature beats under the guidance of a doctor, to have regular checkups, and to seek prompt medical attention when obvious symptoms appear.