Preventing an asthma attack begins with removing the triggers. There are many causes of asthma attacks, some of which are obvious, but others are often hidden and require a concerted effort by doctors and patients to find them. Patients can avoid asthma attacks by doing the following: 1. Keep away from allergens 30% to 40% of asthma patients can go to the hospital to check out allergens. Dust mites, dog and cat dander, mold, pollen, milk, poultry eggs, feathers, cotton wool, and fungi are all important allergens to avoid contact with in daily life. 2, prevention of colds Colds and upper respiratory tract infections (especially viral infections) are the most common triggers, and are more pronounced in winter and spring or when the climate is variable. For influenza, you can consider prevention through flu vaccination. 3.Avoid inhalation of irritating odors Smoke, dust, gasoline, paint and other odors as well as cold air may stimulate the bronchial mucosa, which may lead to spasm of bronchial smooth muscle and induce asthma. 4.Avoid overexertion Intense or prolonged physical labor and intense competitive sports can also induce asthma. However, this does not mean that asthma patients cannot exercise. After diagnosis and treatment, patients will choose suitable exercise programs instead to enhance immunity and reduce the frequency of asthma attacks. 5, pay attention to keep warm The cold season is prone to respiratory infections, or sudden changes in weather or lowered air pressure can trigger an asthma attack. Be sure to add clothes in time, especially pay attention to the warmth of the neck, clothes should not be too tight, it is best to wear cotton fabrics, avoid wearing clothes or decorations containing animal fur. 6.Keep the appropriate air humidity in the room The change of air humidity also has an effect on the development of asthma, the most suitable air humidity is 60% to 70%, too high or too low is not good for patients. In addition to the above, patients can also carry out desensitization therapy in advance under the guidance of a doctor according to the pattern of their attacks, so as to achieve early prevention, early treatment and early relief.