What is coronary heart disease? The heart constantly transports blood to all parts of the body, but the heart itself also needs blood supply, the blood vessels that provide blood for the heart are coronary arteries, these coronary arteries for some reasons can occur atherosclerosis, hardened plaque will accumulate on the walls of the blood vessels, over time, when the lumen of the blood vessels is excessively narrowed or even occluded, the heart blood and oxygen delivery obstacles, causing insufficient supply, resulting in Myocardial ischemia, and even myocardial necrosis, this is coronary heart disease, known as coronary artery atherosclerotic heart disease. The typical symptom of angina pectoris is a painful feeling of pressure and constriction in the chest, the size of the palm of the hand, mostly triggered by physical exertion, emotional excitement, morning rising, full stomach, etc. The pain may spread to the back, left shoulder or even the left arm, neck, teeth, etc. It may be accompanied by shortness of breath, chest tightness, sweating, weakness, etc. Rest or taking quick-acting heart pills, nitroglycerin, etc. When the pain cannot be relieved and is severe, accompanied by a sense of imminent death, and lasts for more than 30 minutes, we should be alert to the possibility of myocardial infarction. Physical examinations commonly used in clinical practice to confirm the diagnosis of coronary artery disease include electrocardiogram (preferably during the onset of chest pain), coronary artery enhancement CT, coronary angiography, and intracoronary ultrasonography, the latter two of which are the gold standard for confirming the diagnosis. Biochemical examination is mainly the examination of myocardial necrosis markers. When there is necrosis in the myocardium, the laboratory value will be significantly higher, which is meaningful for the diagnosis of acute myocardial infarction. Treatment of coronary heart disease mainly includes drug therapy, interventional therapy and surgical treatment Drug therapy is the most basic treatment. Medication can relieve the symptoms of angina and stabilize the disease, and slow down the development of the disease. Commonly used drugs include: anti-platelet drugs, nitrates, beta-blockers, calcium channel blockers, statins, etc., and also some Chinese herbal medicines. It should be noted that sublingual nitrates can provide rapid relief when angina symptoms strike. Surgical treatment mainly involves coronary artery bypass grafting under extracorporeal circulation, which requires open-heart surgery to bridge a section of the patient’s own vein or arterial vessel (usually a lower extremity vessel) over the narrowed or occluded coronary artery to create a bypass that can restore coronary blood flow. Interventional therapy has now become an important tool in the treatment of coronary artery disease, and it has the advantages of significant efficacy, minimal trauma, low risk, and short postoperative recovery time. The use of digital imaging technology extends the doctor’s field of vision and extends his hands with the help of catheters and guidewires, thus diagnosing and locally treating lesions in the body. The most common clinical procedure is coronary artery stent implantation, which involves attaching a lattice-shaped metal stent to the original balloon, and then releasing the metal stent to attach to the vessel wall after the balloon has propped up the narrowed vessel, which props up the narrowed vessel and ensures smooth blood flow. Coronary heart disease is a chronic disease, and the development of coronary heart disease is accelerated when accompanied by a number of high-risk factors. Common risk factors for coronary heart disease include: diabetes, hypertension, hyperlipidemia, smoking, heavy alcohol consumption, obesity, family history of coronary heart disease, and chronic poor mood. Treatment of coronary heart disease prevention, mainly including: 1, reasonable arrangements for work and study, life should be regular, maintain optimism, happy emotions, pay attention to the combination of work and rest; 2, control the diet: change bad eating habits, avoid frequent use of fatty meat, animal offal, cream products, egg yolk, etc., advocate a light diet, eat more malt, corn, beans, fruits, vegetables, binge eating is strictly prohibited; 3, efforts to quit smoking, moderate Drinking alcohol; 4. Active treatment of diseases related to coronary heart disease, such as diabetes, hypertension and hyperlipidemia patients should actively control blood sugar, blood pressure and blood lipids; 5. Proper exercise and more knowledge about coronary heart disease.