For patients with chronic heart failure, how to get through the winter is a great concern for patients and their families. Because the cold, cold is acute heart failure, acute exacerbation of chronic heart failure is a common cause, but also chronic heart failure patients in winter hospitalization is an important reason. Patients and friends first need to clarify two concepts: “cold” and “respiratory infection”. What people call “colds” are mostly acute upper respiratory tract infections, in addition to pharyngitis, laryngitis, tonsils, influenza, etc., which are also upper respiratory tract infections; lower respiratory tract infections include diseases such as bronchitis, bronchiolitis, and pneumonia. Whether it is upper or lower respiratory tract infections, they can pose a challenge to the heart function of patients with chronic heart failure. Respiratory tract infections and heart failure When the body is attacked by bacteria or viruses, there will be fever, accompanied by increased sympathetic nerve tone, increased metabolic rate, thus accelerating the heart rate, vasoconstriction, a series of changes have aggravated the cardiac load; in addition, the airway edema caused by the infection of the respiratory tract, oozing, hyperplasia, resulting in an increase in the pressure of the pulmonary vascular bed, and if there is a hypoxia, it will also cause an increase in the pressure of the pulmonary artery, which will aggravate the load of the right heart. All of these factors accelerate the progression of heart failure. A Swedish clinical trial showed that air temperature is an external trigger for heart attacks: the number of heart attacks was significantly higher in cold weather compared to warm weather. For most patients with pulmonary heart disease, due to the history of chronic bronchitis and COPD, there are already different degrees of structural and functional disorders of the respiratory system, which are more susceptible to the influence and stimulation of cold air and pathogens in the respiratory tract, thus aggravating the respiratory disease and affecting the heart’s function. Therefore, in order to ensure a smooth winter, heart failure patients should actively self-management, to do the following: Note 1, pay more attention to the weather changes, timely increase or decrease clothing, pay attention to the cold and warmth, to avoid due to the weather of the reasons of the rosary tract infection; 2, if the people around the cold and other infectious diseases, be sure to pay attention to their own personal hygiene, if necessary, to reduce contact, to prevent their own infections; 3, in the crowded places, try to wear a mask; 4, once the cold and cold air, the cold and cold air, to prevent infection, to prevent infection. Once the symptoms of upper respiratory tract infection appear, even the indicators of acute infection are elevated (such as calcitonin CPT, C-reactive protein CRP, etc.), we should actively treat the disease in a timely manner, and do not wait until the disease develops and causes a certain burden on the heart before seeking medical treatment.