1, maintain good health, strengthen resistance Such as proper nutrition and intake of allergen-free diet, some foods contain histamine, food production process with additives such as yellow pigment, preservatives, cow’s milk, eggs, nuts, etc., can trigger allergic reactions and asthma attacks; timely replenishment of adequate water; proper rest and sleep; do not exercise strenuously; do not overexert yourself. 2. Eliminate and avoid allergens such as pollen, mold spores, animal skin, feathers, house dust (mites), food and chemical substances, including insecticides, fragrances, cigarettes, detergents, bleach, paints and paint thinners, sawdust and dust from many industrial raw materials in the production of finished products. Avoid volatile chemicals, cigarettes and all kinds of combustion fumes, fumes, extreme temperature changes, avoid crowded places or contact with patients during the cold and flu season, do not go to the humid basement or engage in work that may cause occupational asthma, pay attention to the cleanliness of household appliances such as air conditioners, desuperheaters, air filters, electronic air purifiers. 3, avoid emotional changes such as too much excitement, anxiety, crying and laughing, fear, anger, etc. 4, do not keep pets at home dog and cat saliva, urine and dander may be allergens, the family has asthma patients better not to keep pets. If the pet has been kept at home, it is best not to let it into the bedroom and near the soft sofa, carpet, straw mat, thick pile curtains. If your doctor diagnoses that your asthma is caused by a pet, stay away from it. Pet dander and secretions may be present in the house for a long time, so it is best for the patient to move out of the house for a month and to clean the house. 5.Medication prevention Although the daily life of asthma patients is affected, a survey shows that only about 60% of patients receive lung function tests, 83% of patients do not receive regular treatment, and some patients lack awareness of the seriousness of asthma and stop using medication on their own as soon as their condition gets better. In addition, in daily life, cold can trigger asthma, therefore, asthma patients should pay special attention to the warmth of the neck, clothes should not be too tight; to adhere to the medication under the guidance of the doctor, while appropriate exercise; can choose to ventilate at noon and afternoon when it is relatively warm; patients should try to find their allergens and avoid them; diet should be light and nutritious, do not eat food that can cause asthma attacks, less spicy and thick and greasy Patients should not smoke and try to avoid second-hand smoke; they should not drink too much alcohol, as excessive alcohol consumption can aggravate the disease.