Asthma is currently one of the most common chronic diseases worldwide, and it is estimated that 1 in 20 people worldwide, or about 300 million people, suffer from asthma. It is estimated that nearly 20 million people in China suffer from asthma. Asthma is a global public health problem that has been of great concern and is the most common chronic disease of childhood, with about 1/3-1/2 of childhood asthma progressing to adulthood. Bronchial asthma is a chronic inflammation of the bronchial tubes, which is often accompanied by recurrent episodes of wheezing, shortness of breath, chest tightness and/or coughing. Cigarettes can cause many diseases, and the chemicals in cigarettes and the smoke emitted when smoking can have a direct effect on asthma patients because they can irritate the breathing tubes, so patients should quit the habit of smoking. In addition, patients should also try to avoid passive smoking. Alcohol should also be consumed sparingly. For example, patients who are sensitive to animal hair should not keep pets at home, and other allergens that can easily cause the disease, such as blankets, should also be avoided or washed with hot water every week. 3.Prevent respiratory infections When the weather is cold, inhaling cold and dry air is very bad for asthma patients, so you should avoid going out as much as possible during an asthma attack. If you have to go out, you should drink some warm water and wear more clothes beforehand. It is best to wear clothing that protects against wind and rain, which can help keep you warm. If necessary, wear a scarf or mask to protect your mouth and nose to avoid direct exposure of your respiratory tract to cold air and try to breathe in warm air. If you are not allergic to the flu vaccine, you can get a flu shot. 4.Keep indoor air circulation and cleanliness Asthma patients should pay special attention to indoor cleanliness and air circulation because dust mites and bacteria in the air are the main allergens that cause asthma attacks, so they should be cleaned diligently to reduce the dust in the air. 5, moderate exercise Some people stop all exercise because it may trigger asthma, in fact, this is a wrong approach, because exercise can effectively strengthen the heart and lung function, which is very helpful to control the disease. Asthma patients can exercise as usual as long as they consult their doctors before choosing sports, and swimming is a very suitable exercise for asthma patients, because there is enough water, so most of them will not cause the attack. 6, reasonable diet, rich in nutrition asthma patients should be light and nutritious diet, not to eat food and “hair” that can cause asthma attacks, less spicy and greasy food. Eat more vegetables and fruits, some vegetables, such as radish, loofah, etc., have the effect of lowering gas, resolving phlegm and clearing the lungs, which is very beneficial to asthma patients. Some fruits, such as pears, bananas, loquats, etc., also help to keep the bowels open and reduce abdominal pressure. At the same time, pay attention to calcium supplementation, calcium has a role in promoting bone growth and development, but also has anti-allergy and other functions. Therefore, asthma patients can eat more foods that are high in calcium. However, when supplementing calcium with seafood, pay attention to anti-allergy. Asthma patients should drink more water on weekdays. Drinking water not only replenishes water, but also dilutes phlegm and facilitates the discharge of sticky phlegm. Eat less and more meals to eat, do not be too full. In addition, asthma patients should also have a good lifestyle, regular rest and rest, do not overwork, but also always keep a happy mood.