The prevention of pediatric bronchial asthma to prevent attacks is an important part of modern treatment of bronchial asthma, and a new concept of three-level preventive measures is proposed. 1.Primary preventive measures: mainly to improve the environment and eliminate various factors that trigger asthma; 2.Secondary preventive measures: mainly early diagnosis and timely treatment to prevent the development of the disease; 3.Tertiary preventive measures: active treatment to prevent the deterioration of the disease and reduce the occurrence of emphysema and pulmonary heart disease. I. Prevent contact with allergens After detailed history taking and skin testing, look for allergens, which should then be removed or avoided. For example, dust mites, cockroaches, animal dander and feathers can induce airway allergic inflammation, so it is necessary to clean the environment frequently, wash bedding and avoid clothing made of feathers. Second, protective treatment life should be regular, avoid excessive fatigue, prevent respiratory infections, eliminate lesions in the nasopharynx and oral cavity, appropriate participation in sports activities, advocate participation in swimming in summer, but the amount of exercise should be gradual, and should be guided by a doctor. Third, improve the body immune therapy asthma vaccine subcutaneous injection twice a week, each time 0.1ml, 1 to 2 weeks later, once a week, each time the dose increases to lml that is as maintenance, adhere to 2 to 3 months to see results. It is contraindicated for people with active tuberculosis or hepatitis. In addition, nucleotide (a kind of nucleic acid hydrolysate) is also used in the town, and is usually injected intramuscularly 2m at a time, 3 times a week for the first 3 weeks, and once a week thereafter. The solution is also an immune promoter and regulator, dosage: 7mi/time for 1-4 years old, lOml/time for 4-7 years old. 3 times a day for 3-6 months as a course of treatment. However, these therapies have had mixed results in clinical trials and should not be used as a routine. Fourth, Chinese medicine to prevent seizures Chinese medicine in the interval between seizures advocates supporting and cultivating the root, and strengthening the method of strengthening the spleen, benefiting the qi and tonifying the kidneys. However, it is necessary to give evidence-based treatment according to different types. During the attack period, ephedra is generally used as the main medicine, while cold symptoms are accompanied by dry ginger, horseradish and wu wei zi; hot symptoms are mostly accompanied by gypsum and huang cen. In the remission period, the lung deficiency type can be treated with Ginseng-Qi Tang and Yu Ping Feng San; the spleen deficiency type can be treated with Six Jun Zi Tang; the kidney deficiency type can be treated with Liu Wei Di Huang Wan plus or minus, Zuo Gui Drink, Right Gui Drink or Jin Kui Kidney Qi Wan plus or minus. How to care for children with asthma Asthma patients often have recurrent or acute attacks, so their care is also extremely important, especially for children, care knowledge is a must for parents to master. The reporter learned that some hospitals in Xi’an respiratory specialties regularly hold lectures on the care of asthma patients. Parents need to know what triggers their child’s asthma, whether it is caused by allergen stimulation, mental factors or climate change. Parents should also be aware of the fact that children usually have mucous membrane allergies before an attack, such as itchy nose, eyelids, sneezing, dry cough and other aura symptoms, and they should eliminate their children’s fear at home during an asthma attack. At the same time, it is best not to hang tapestries and paintings at home, avoid bedding made of silk and down and other items that can easily cause allergies, pay attention to keeping the room ventilated, avoid smoking indoors, and place as little as possible insecticides, cosmetics and other items with volatile odors. Parents should also be aware of the correct use of inhalers and pay attention to the care during asthma attacks. Parents should be sedated during an asthma attack, otherwise it will increase the child’s mental stress. In addition, parents should also use discretionary medication according to the medication history, strictly grasp the dosage, usage, indications and contraindications, master the posture of the child’s medication, let the child drink more water to prevent sputum from drying up and not easily coughing up, and consult a doctor or go to the hospital for treatment when necessary. The reporter Han Yan asthmatic children appropriate to do what sports although sports may trigger asthma attacks, but not all kinds of sports will trigger asthma, some asthmatic children if you can participate in some appropriate long-term physical exercise can also reduce the response to trigger asthma. Children with asthma are prone to asthma attacks due to emotional stress, long-term inactivity and poor resistance to disease, and therefore are encouraged to participate in sports such as walking, jogging, gymnastics, cycling and swimming during the remission period. Different sports and the duration of the sports have different effects on the asthma resting place. The more strenuous the exercise, the greater the chance of triggering asthma. Strenuous running, climbing, ball games, etc. have relatively more chances of causing sports asthma; swimming, cycling, rowing, etc. have less chances of causing asthma; light sports such as walking, gymnastics, etc. have even less chances of causing asthma. The longer the duration of an exercise, the more chances of inducing asthma; generally speaking, it takes 5 to 10 minutes of vigorous exercise to trigger an exercise asthma, and less than 5 minutes to rarely cause an asthma attack. Here we need to introduce a special exercise program that is very beneficial to children with asthma – swimming. Swimming is the best exercise to enhance respiratory function. Because the density of water is hundreds of times greater than air, so the pressure on the chest cavity when moving in the water, especially when inhaling to overcome the pressure of the water to carry out, which is the same as the respiratory muscle break “weight-bearing exercise”, so swimming can make the respiratory muscles become strong and powerful, increase the mobility of the thorax, greatly increasing lung capacity. When swimming the body into a horizontal position forward. The blood circulation in the body is not affected by gravity; coupled with the water flow on the surface of the body part of the blood vessels play a massage effect of pressure pat, conducive to venous reflux, and therefore blood circulation is strong. Therefore, people who swim for a long time, the heart muscle is also developed, the heart contraction is strong. In addition, because swimming is carried out in the water, human body temperature and water temperature, there are differences between the air temperature, even in the same temperature and water temperature, human bacteria feel different, for example, when the water temperature of 20 ℃, people in the water will feel cold, but in the same temperature of the air is warm; water temperature at 30 ℃, people in the water will feel cool and comfortable, but in the same temperature of the air, it feels a little hot. Therefore, regular swimming activities can improve the body’s thermoregulatory function and play a role in preventing respiratory diseases. In short, children with asthma often participate in suitable physical exercise, which is conducive to promoting blood circulation and metabolism, improving respiratory function, increasing muscle tone, improving the body’s ability to adapt to temperature, especially to low temperature, improving physical fitness and improving the body’s resistance to disease, and reducing asthma attacks. At the same time, it can make the sympathetic nerve excited due to long-term adherence to appropriate exercise, and counteract the chemically active mediators released due to exercise, so as to achieve the purpose of not occurring asthma after exercise.