One point must be clear: angina pectoris in coronary heart disease sometimes has toothache as the first symptom, while severe toothache can trigger angina pectoris, and inadvertent tooth extraction can also lead to the occurrence of angina pectoris and heart attack. It is generally believed that patients with coronary artery disease should be consulted by cardiologists before tooth extraction. As long as the indications are mastered and under close cardiac supervision, most patients with coronary artery disease and heart attack can have their teeth extracted safely, but the following issues should be noted: 1. 2. Proper sedation should be taken under the guidance of the physician before tooth extraction so that the patient can get sufficient rest. 4. When extracting teeth, patients with coronary heart disease should remind the dentist of their history of coronary heart disease and heart attack, and try not to use epinephrine, but choose lidocaine as anesthesia to avoid the occurrence of angina pectoris and arrhythmia induced by the increase of heart rate. 5, anesthesia should be safe, the operation should be skilled, and the action should be gentle to minimize painful stimulation, bleeding and injury to avoid inducing angina pectoris due to patient’s mental tension. 6. If there are no special circumstances, the diseased teeth should be extracted in batches. 7. Before tooth extraction, long-acting cardiac pain can be taken and anti-anginal drugs should be prepared. Tooth extraction should not be performed in the following cases: recent frequent angina pectoris; those with a history of heart attack within six months; those with recent heart failure; and those with severe arrhythmia. Patients with heart attack should preferably undergo surgery 1~2 years after the infarction, and if the surgery is more urgent, it is also better to postpone it until 3 months after the disease. In addition, the decision should be based on the size of the operation and the priority of the condition, and a consultation with an internist should be requested if necessary.