Coronary heart disease usually refers to atherosclerotic heart disease of the coronary arteries, the typical symptoms of which are chest pain and shortness of breath. Coronary heart disease is a heart disease caused by narrowing or occlusion of the coronary artery lumen, usually due to atherosclerotic lesions of the coronary blood vessels. Early coronary heart disease may not have any symptoms, or angina symptoms may appear after strenuous physical activity or physical labor, and be relieved after resting or taking medication. Most patients have an attack of coronary heart disease that causes significant angina, often triggered by emotional excitement or exertion, a feeling of pressure or tightness in the chest, and shortness of breath when exerting themselves due to the heart’s inability to pump enough blood. Coronary heart disease may also be accompanied by other symptoms during an acute attack, such as sudden cold sweats, toothache, shoulder and back pain, and discomfort in the upper limbs. Once these symptoms occur, it is important to consult a doctor in time and cooperate with him or her to take examinations and treatments to avoid delaying the treatment.