Paired atrial premature has no special effect if it is simply paired once. However, if atrial premature pairing occurs frequently and the number of atrial premature pairing is more than 5 times per minute, it is considered as frequent atrial premature, which may easily cause long-term arrhythmia and atrial arrhythmia, such as atrial fibrillation or atrial flutter. The main danger of atrial premature in pairs, if it is frequent, is that it may cause discomfort to the patient, which may manifest as panic and chest tightness and affect the quality of life. If the disease continues to progress, it can easily lead to atrial fibrillation, atrial flutter and other serious arrhythmias, and another is that repeated episodes of atrial prematureness can easily lead to atrial hypertrophy and atrial enlargement, which can easily aggravate atrial arrhythmias. For this kind of atrial premature, it is necessary to perform dynamic electrocardiogram examination to clarify the frequency of atrial premature episodes for symptomatic treatment.