Coronary heart disease refers to a heart disease in which the coronary arteries are narrowed due to severe plaque and/or combined thrombosis caused by atherosclerosis, resulting in insufficient blood supply to the coronary arteries and causing myocardial hypoxia as the main manifestation. Risk factors for coronary heart disease are those who have the following characteristics are relatively prone to coronary heart disease. Main risk factors: (1) Age: Mostly seen in middle-aged and elderly people over 40 years old, with faster progression after 49 years old. (2) Gender: more men than women, about 2:1. (3) Hyperlipidemia: there is its elevated LDL, which is an independent risk factor for coronary heart disease. (4) Hypertension (5) Diabetes: the incidence of coronary heart disease is 2 times higher in diabetic patients than in those without diabetes. (6) Smoking (7) Family history of coronary heart disease: parents, siblings, grandparents and grandparents in the family with coronary heart disease should be noted. Secondary risk factors: obesity, occupation (stressful work), diet (greasy), genetic factors, trace elements, type A personality, blood composition, etc. People with these characteristics in their lives should be alert to the development of coronary heart disease and make early changes to their lifestyles. Coronary heart disease can occur in many cases. People who have coronary heart disease should avoid the following triggering factors to reduce angina attacks. (1) Various sports, such as brisk walking, uphill, cycling (especially top wind and weight bearing), running, etc. (2) emotional changes, such as anxiety, over-excitement. (3) Full meals, alcohol abuse, especially activities or walking after a full meal. (4) Irregular life, not enough sleep. (5) Weather changes, cold air stimulation, heavy smoking, excessive excitement or anxiety, etc.