Patients who have a sudden heart attack should be treated accordingly. If an angina attack occurs, the patient should be asked to squat or take a flat position immediately to avoid accidental falls. Ask the patient to take deep breaths, maintain a stable mind and avoid stress. Give oral emergency treatment with nitroglycerin, quick-acting heart pills and other drugs. The patient’s heart rate should be closely observed. If the pain symptoms are not relieved after half an hour of medication, go to the hospital immediately. If the angina is recurrent and the pain persists without relief, the occurrence of acute myocardial infarction should be alerted. In this case, the patient’s state of consciousness should be noted. If the patient’s aortic pulsation and respiration disappear, cardiopulmonary resuscitation should be given immediately. Lay the patient flat, loosen the collar and belt, and keep the airway open. Place both hands parallel to each other at the midpoint of the nipple line, press to a depth of 5 cm below the sternum, and press at a frequency of 100 times/min. Call others while pressing, help pull the 120 emergency phone, and send the patient to the nearest hospital for rescue treatment as soon as possible. After the patient’s condition has stabilized, coronary angiography may also be required to clarify the cause if necessary. Depending on the patient’s test results and physical condition, symptomatic treatment will be taken.