A pulse of about 50 beats per minute is considered bradycardia, and the cause should be clarified first. Bradycardia can be seen in physiological as well as pathological states. Physiological states are common in the elderly as well as in athletes and people who are usually in good health and often do not require special treatment. 24-hour ambulatory ECG monitoring is recommended to clarify the relevant heart rate changes. For pathological bradycardia, which can be seen in patients with various types of organic heart disease, patients with symptomatic bradycardia need to be treated with medications, including aminophylline, salbutamol, isoproterenol, and other applications, and if necessary, with adjuvant therapy related to artificial pacemakers. For bradycardia caused by non-circulatory related diseases, such as hyperkalemia and acute cerebrovascular disease, systemic treatment is required for the primary cause.