Some medical studies have found that coronary heart disease patients have most of their attacks at night. Winter and coronary heart disease is the most common season, by the influence of temperature factors and the body’s response, winter night and more factors will induce coronary heart disease. Therefore, patients with coronary heart disease must be targeted “defense”. Winter night easily induced coronary heart disease of the four major reasons are as follows: First, eat too much dinner Winter by the influence of temperature, the body’s consumption may be relatively large, so eat relatively more. General family dinner will be more sumptuous, coronary heart disease after a full meal of abdominal contents increased, gastrointestinal expansion, diaphragm uplift, will make it difficult to whistle. Because the digestion of too much food, need more blood supply to the digestive system, both aggravate the burden on the heart and make the coronary artery blood supply less, thus easily cause angina pectoris and myocardial infarction. Therefore, do not be too full for dinner, to eight points full is appropriate. Second, sleep too late at night Winter nights are darker earlier and longer, so many people used to nest inside the home to watch TV. At night because of watching TV or other reasons cause excessive emotional excitement, sympathetic nervous excitement, blood catecholamines increase, causing elevated blood pressure, coronary artery spasm, resulting in myocardial ischemia, triggering angina pectoris or myocardial infarction. Therefore, patients with coronary heart disease should strictly limit the time to watch TV at night, try not to watch nervous, stimulating programs. Try not to mention unpleasant things at night. Third, the night warmth is not good Winter night temperature is very low, the indoor temperature is low or the quilt is too thin, it is easy to catch a cold. Cold stimulation will increase the chance of angina, myocardial infarction, so that the sympathetic nerve excitation, coronary artery spasm, can make coronary heart disease symptoms aggravate, induced coronary heart attack. So we must pay attention to keep warm at night. Fourth, the incorrect use of drugs before going to bed A large part of the coronary heart disease patients combined with hypertension cardiology diseases, need to take long-term insistence on antihypertensive drugs. However, after falling asleep at night, blood pressure is about 20% lower than during the day, some patients take antihypertensive drugs before going to bed, blood pressure further decline, so that the blood flow is slow, insufficient blood supply to the heart, easy to induce myocardial infarction. Winter night is long, is very dangerous. Coronary heart disease attack at night is the most unpredictable and dangerous, to the night, must pay more attention to do a good job in all aspects of protection, to strengthen the awareness of self-protection, to understand and know how to prevent these winter night common disease risk factors, to reduce the chances of coronary heart disease attack and the incidence of accidents.