Patients with coronary artery disease are less adaptable to weather changes, so there is a close relationship between changes in temperature and flare-ups and death in patients with coronary artery disease. Cold winter has a greater impact on patients with coronary heart disease. So, how can patients with coronary heart disease safely get through the cold winter? I will explain how to keep warm through the winter. One: patients must do to prevent cold and keep warm, especially the patient’s face and limbs warm. In the bad weather of cold wave and heavy wind and snow, should reduce the time of going out and outdoor work, when going out should wear a good cold-proof clothes, wear a good mask and hat. The second: moderate exercise, moderate labor. Patients with more frequent angina attacks should not participate in sports, especially not suitable for morning exercise. When the weather is cold, do not carry out strenuous activities, as little as possible to participate in long-distance travel. However, some of the physical exercise that can be done, such as outdoor walking, tai chi, qigong, etc. should be insisted on, but in the event of sudden cold, snowstorms, gusty winds and other weather changes, it is necessary to stay indoors. Third: maintain a good mental state, avoid great joy and great sorrow. Adopt good habits of living, ensure sufficient sleep and rest, can reduce the burden on the heart. Patients with frequent attacks of angina pectoris, should reduce the room activities, so as to avoid emotional excitement, increase myocardial oxygen consumption, aggravate the condition. The fourth: avoid triggers. To actively combat colds, bronchitis and other upper respiratory tract infections, so as not to aggravate the burden on the heart due to inflammation of the lungs or fever; advocate the use of warm water in the bath, in order to improve the skin’s ability to resist cold. Its five: regular body checks and follow the doctor’s instructions to do. In addition to insisting on taking the common medicines for the treatment of coronary heart disease, but also to prepare the health box, oxygen and other emergency (with) products; when chest tightness, chest pain, shortness of breath, should rest on the spot, and timely use of portable first aid medicines, after the symptoms are relieved, you should think of ways to go to the hospital in a timely manner for examination and treatment.