Intermittent pause of heartbeat may be caused by sinus arrhythmia, heart block or atrial pre-systole. 1. Sinus arrhythmia: If sinus arrest occurs commonly in patients with heart attack and cerebrovascular accident, patients may have intermittent heartbeat pause, black haze, transient consciousness disorder, etc., and need to consult a doctor in time and follow the doctor’s instructions in the hospital for treatment. 2. Heart block: Some healthy adults, children and athletes may experience a mild degree of conduction block, which is characterized by intermittent heartbeat pauses, accompanied by palpitations (rapid heartbeat, often accompanied by panic), discomfort in the precordial area, fatigue and dizziness. It is necessary to consult a doctor for an electrocardiogram, ultrasound and other tests. Follow the doctor’s instructions to adjust the daily routine or take medication such as metoprolol. 3. Atrial pre-systole: mainly manifested as palpitations (rapid heartbeat, often accompanied by panic), chest tightness, fatigue and other symptoms, most of them are functional, often without treatment. When the symptoms are obvious, you can follow the doctor’s instructions to use drugs such as propafenone. Patients should quit smoking and drinking alcohol, minimize the consumption of coffee and other stimulating beverages, have a regular work and rest schedule, and eat a reasonable diet. Avoid stress and mood swings as much as possible.