The cause of bradycardia is complex, there are physiological and pathologic conditions, the solution is based on the presence or absence of symptoms to choose medication. 1. Physiologic factors: common in athletes, healthy young people and during sleep. 2. Pathological factors: common in intracranial diseases, hypothermia, hypothyroidism and severe hypoxia, and the application of, for example, β-blockers such as metoprolol, digitalis drugs such as digoxin, etc. caused by the slowing of the heart rate. Asymptomatic sinus bradycardia usually does not require treatment. If the heart rate is too slow and symptoms such as fatigue, weakness, and dizziness due to insufficient cardiac output occur, medical attention should be sought, and treatment with atropine, isoprenoids, or cardiac pacing should be chosen according to the doctor’s instructions. When bradycardia occurs, there is no need to be nervous, according to the presence or absence of symptoms and actively seek medical treatment. Please take medication as prescribed by your doctor.