Chronic bronchitis usually refers to a cough that persists for more than three months in a year and occurs for two or more years in a row, and is more common in patients over 50 years of age, so it is also known as “old bronchitis”. It is often characterized by coughing, coughing up sputum, or shortness of breath, wheezing, etc. In severe cases, it can be complicated by emphysema, pulmonary heart disease and toxic shock. The long, cold winter months are a “hurdle” for elderly patients with chronic bronchitis. People with a history of chronic bronchitis are prone to relapses in winter due to cold and flu, smoke and dust pollution, chemical allergies, and other factors. Therefore, the following points need to be noted in daily life: 1. In terms of living Wear a mask and scarf when going out in winter to prevent cold air irritation and colds, and pay particular attention to the prevention of bacterial infections, which are a trigger for the onset of “chronic bronchitis”. At the same time, try to avoid contact with patients with colds and fever, and go to crowded places with turbid air less often. In addition, adhere to exercise, when the weather is good, appropriate outdoor activities, breathing fresh air, can improve the respiratory tract cold and adaptability. Exercise intensity to do not feel tired, comfortable, choose their own suitable items, breathing exercises, chest expansion exercises, abdominal breathing, such as gymnastics, boxing, qigong, walking and jogging, etc., but do not get up too early to exercise, so as not to get cold. 2, dietary conditioning It is advisable to choose light and easy to digest nutritious food. As the saying goes, “meat produces phlegm, fish produces heat, vegetables and radishes keep you safe”. Eat more vegetables and fruits, avoid eating shrimp, crab, fish, seafood and pineapple and other foods that can cause allergies. “Shaped cold drink will hurt the lungs”, to eat warm food, do not eat groundnuts, potatoes, leeks and unprocessed soybeans, etc. These foods are easy to produce gas to cause bloating, diaphragm raise, lung capacity is limited, is not conducive to the recovery of bronchitis and other respiratory diseases. 3. Vaccination Vaccination against bronchitis can effectively prevent the occurrence and attacks of chronic bronchitis, bronchial asthma and asthmatic bronchitis caused by upper respiratory tract infections. However, the vaccine cannot be used if the fever is 38 degrees Celsius or higher and in patients with active tuberculosis, active hepatitis, or eczema. Patients with high blood pressure, heart disease and bronchiectasis, severe emphysema or long-term hormone use should follow medical advice when using the vaccine. In addition, it is also very important to maintain a stable mood, optimistic mental state and avoid stimulation by adverse factors such as tension, anxiety and depression.