Chronic pulmonary heart disease, referred to as chronic pulmonary heart disease, is a common disease in China. The prevalence rate is higher in northeast, northwest and north China than in the south, and the prevalence rate is higher in rural areas than in cities, and increases with age. The dry and cold climate in winter can easily induce respiratory infections, which can aggravate and worsen pulmonary heart disease. Therefore, it is especially important for patients with pulmonary heart disease to do a good job of prevention to spend the winter safely. First: prevent upper respiratory tract infections Upper respiratory tract infections are the main cause of acute attacks of pulmonary heart disease. Therefore, patients with pulmonary heart disease should strictly prevent upper respiratory tract infections. Usually, we should strengthen exercise, go outdoors in fresh air to practice deep breathing, whistling, lip reduction breathing, in order to improve the strength of respiratory muscles, increase lung capacity and enhance the immunity of the body; pay attention to the cold, to prevent cold air stimulation; increase and decrease clothing with climate change, so as not to cause colds and aggravate the disease. In addition, winter should also pay attention to the temperature and humidity of the living room, regularly open the windows to keep the air circulation fresh. Second: Keep the respiratory tract unobstructed Ventilation disorders are a major factor in the aggravation of pulmonary heart disease. Therefore, it is necessary to try to keep the respiratory tract unobstructed. If you cannot cough up phlegm, it will aggravate the obstruction of the respiratory tract; drinking more water, hot steam or nebulized inhalation is good for moistening the respiratory tract and diluting thick phlegm; more activities and conscious coughing are good for phlegm discharge. Of course, it is more effective to take phlegm-suppressing drugs such as tranylcypromine. Third: home oxygen therapy Oxygen can significantly slow down the progression of pulmonary heart disease, reduce pulmonary artery pressure and reduce the death rate of pulmonary heart disease, which is by far one of the most reliable methods to prolong the survival time of patients with pulmonary heart disease. The principle of oxygen therapy during exacerbation of pulmonary heart disease is: long-term, continuous, low-flow (1~23 l/min) oxygen inhalation. It should generally continue for more than 14 hours per day, with intervals during the day and without interruption during sleep. In recent years, oxygen therapy has been popularized to families. Fourth: strengthen the diet conditioning The energy consumed by breathing of pulmonary heart patients is larger than normal, and the appetite is poor due to visceral stasis and edema, and the absorption is poor. Therefore, most patients suffer from malnutrition, weight loss, hypoproteinemia, and low immunity, which can easily lead to infection and aggravate the disease, thus forming a vicious circle. Therefore, it is very important to regulate the diet and nutrition of pulmonary heart disease. Patients should be given high-quality protein (eggs, milk, fish, etc.) and a diet rich in vitamins, fiber and easy to digest (such as fruits and vegetables, etc.). Do not over-restrict salt, because low salt can aggravate weakness, loss of appetite, and even nausea and vomiting, aggravating malnutrition. However, patients with edema and cardiac insufficiency should control the amount of salt to avoid aggravating the respiratory and cardiac burden. Of course, it is also important for patients with pulmonary heart disease to keep their bowels open. If conditions permit, under the guidance of a physician, cordyceps and thymus peptides can be taken, which can improve immunity, and shiitake mushrooms and mushrooms are also useful for improving immunity. Fifth: timely treatment of the onset of pulmonary heart disease acute attack or exacerbation of the disease, should be timely treatment under the guidance of a doctor to avoid further aggravation of the disease, and enhance care.