First, strengthen physical exercise, improve the ability to resist disease, adhere to running, playing tai chi, practice qigong, etc. From the summer with cold water to rub the body, carry out cold exercise, first from the head and limbs gradually rub the whole body, the temperature of the water can be adjusted appropriately when the temperature decreases, depending on the person. Second, to avoid smoke, dust, harmful gases on the respiratory tract stimulation, must be the main protection. Third, as far as possible to find out the source of allergies, to avoid re-exposure. If you are allergic to eggs, milk, fish and shrimp, you should abstain from eating them. For those who are allergic to pollen and paint, contact should be reduced as much as possible. Four, timely treatment of allergic rhinitis, urticaria, chronic laryngitis and many other diseases, elimination of hidden lesions, can prevent asthma attacks. V. Smoking and alcohol can induce and aggravate asthma attacks, so you should absolutely quit smoking and avoid alcohol. Drinking more tea is good for the discharge of phlegm, antispasmodic and asthma, and improve the ventilation function of the lungs, but the tea should not be too strong, and should not be drunk on an empty stomach and before going to bed, so as not to stimulate the gastric mucosa and night polyuria and affect sleep. Sixth, the cold season should pay attention to the cold to keep warm, abstain from sexual intercourse, avoid overwork, to do a combination of work and rest, to maintain adequate sleep. Seven, it is appropriate to eat light, easy to digest food, avoid cold and fishy. Asthma vaccination: start before the onset of asthma, inject 0.1ml subcutaneously in the first week, then increase 0.1ml every week until 0.5ml as the maintenance amount, and continue to use for 1 to 2 years when effective.