The first is that patients who smoke must quit, because smoking itself is damaging to the airways. The second, if there is a haze or dust more places must be wearing a mask, dust or air pollution on the airway is also damage. Third, the appropriate increase in nutrition, the appropriate increase in nutrition is the usual intake of high-quality protein, such as eggs, milk, beef, mutton, fish and shrimp, etc., and to eat more vegetables and fruits, vegetables to eat to 400-500g per day, all kinds of color vegetables to eat, dark green such as spinach, coronary, rape, yellow carrots, green radish, black or purple eggplant, etc. should be appropriate intake of some The fruit should be between 200-300g per day, and at the same time to exercise properly, some jogging, playing Tai Chi, doing yoga and other aerobic exercises.