Coronary heart disease is clinically known as coronary atherosclerotic heart disease, part of the coronary heart disease is insidious or asymptomatic. Symptomatic patients, often manifested as chest pain, palpitations, shortness of breath, etc., and in severe cases, heart failure, severe arrhythmia, shock, thromboembolism, etc., and even cause damage to the heart structure, sudden cardiac death. Self-assessment can be carried out through external manifestations: 1, chest pain: paroxysmal angina pectoris, the patient may be conscious of the pressure pain in the chest, stuffiness, burning, occasionally accompanied by a sense of imminent death. It is mainly located in the posterior part of the sternum, and may radiate to the left anterior chest and left upper limb. The pain usually lasts a few minutes to more than 10 minutes, mostly 3-5 minutes, not more than half an hour. The triggers are physical labor or emotional excitement, such as anger and anxiety, over-excitement, etc.; 2. Palpitation: palpitation occurs after exercise or labor, or after a full meal or emotional excitement, and the heart feels uncomfortable, arrhythmic or panicky; 3. Dyspnea: patients often experience shortness of breath, or chest tightness and shortness of breath after exercise or exertion, or they have sudden onset of chest tightness and dyspnea while sleeping, which can be relieved when the head is Other: sometimes accompanied by fatigue, dizziness, sweating, nausea and other manifestations. It is recommended that patients go to the hospital for examination in time when the above situations occur, and make judgment through electrocardiogram examination, blood glucose, blood lipid test, or multilayer spiral CT coronary artery imaging examination. Early detection and early treatment, to avoid harm due to asymptomatic coronary heart disease.