If it is simply frequent atrial prematureness, it is not a serious arrhythmia. If it is caused by organic diseases such as coronary heart disease and pulmonary heart disease, it may be a serious arrhythmia. Atrial premature contraction is also known as atrial pre-systole. Frequent atrial premature contraction mainly refers to the high frequency of atrial pre-systole, which may cause palpitations, chest tightness, fatigue and other discomforts. 1. If the atrial premature contraction is simple, it is not a serious arrhythmia, and may be caused by poor rest, excessive mental stress, smoking, drinking and other factors, it is recommended to observe under the guidance of the doctor, and if necessary, choose Metoprolol and other drugs to treat it. 2. If it is due to coronary heart disease, pulmonary heart disease, cardiomyopathy and other organic diseases, resulting in frequent atrial fibrillation, it belongs to the more serious arrhythmia; if not dealt with in time, it may lead to the occurrence of atrial fibrillation, which may pose a threat to the safety of life, and it is necessary to actively treat the primary disease under the guidance of a doctor, and if necessary, choose the treatment of medicines such as propafenone, amiodarone and so on. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.