Bradycardia has the potential to cause angina. Patients with bradycardia have an increase in cardiac ejection volume, adjusting to the decrease in cardiac ejection volume brought on by a slow heart rate. However, severe bradycardia can lead to a decrease in total cardiac ejection volume, and a decrease in cardiac blood loss can cause insufficient coronary artery blood supply, and patients can experience symptoms of myocardial ischemia, which is typically manifested as weakness and chest tightness after activity. Patients with bradycardia should undergo dynamic electrocardiogram to understand the severity of bradycardia. For patients with symptoms of chest tightness and chest pain, coronary angiography should be performed if necessary to find out whether the coronary arteries are narrowed. Bradycardia combined with coronary artery disease results in a significantly higher risk of angina pectoris. Bradycardia patients with chest pain should go to the hospital in a timely manner, improve the relevant examination, assess the severity of the condition, and actively treat under the guidance of physicians.