Asthma is also known as bronchial asthma. Bronchial asthma is a chronic airway inflammation involving a variety of cells and cellular components. Such inflammation is often accompanied by increased airway reactivity, resulting in recurrent episodes of wheezing, shortness of breath, chest tightness, and/or coughing, mostly at night and/or in the early morning hours, and such symptoms are often accompanied by extensive and variable airflow obstruction that can be reversed on its own or through treatment. The main causes of good asthma in spring are the following: 1. Allergen inhalation. According to a survey of childhood asthma allergens in the past decade or so, the top six allergens that cause asthma in children with asthma are: mites, house dust, cotton wool, mold, smoke and pollen. Scholars at home and abroad agree that mites are the most common allergens causing asthma attacks, because dust mites mainly feed on the dander shed by people, and the house dust and cotton wool contain complex components, mainly dust mite debris, cotton wool and other tiny fibers, particles and microorganisms and other components, such as when dressing and undressing before bedtime, finishing bedding, contact with the allergens, which should cause asthma attacks. Mold, smoke, and pollen are also important allergens that cause asthma. Therefore, in order to prevent asthma attacks, children should be given diligent washing of covers and bedding sheets; use wet cleaning and make zippered bedding; improve the living room environment to ventilate and prevent moisture; promote a smoke-free environment and reduce passive smoking; do not keep flowers and birds indoors; and reduce outdoor activities appropriately at the peak of the attack. Be sure to find out the exact allergen, avoid or control asthma allergens and their triggers, is an important means to prevent and control asthma, but also an important part of their own scientific management. 2. Climate change. As winter turns to spring, the climate changes from cold to warm, and spring is windy and sandy, with a large temperature difference between day and night and occasional cold air stimulation, all of which can trigger asthma attacks. Under such climate conditions, the content and flow of allergens in the air increases significantly. Therefore, prevention of asthma requires understanding the characteristics of the climate and adapting to climate change. 3.Infection factors. Respiratory tract infections increase significantly in spring, and the pathogens are mostly viruses, bacteria, mycoplasma, etc. These pathogens as allergens inhaled by people can directly induce asthma, but also can destroy the closely linked epithelial cells, so that they widen, and other allergic principles of the outside world to take advantage of the situation. Some people count that a viral infection, it takes 6 to 8 weeks to repair, and obviously the chances of asthma attacks increase during these 6 to 8 weeks. In case of repeated colds, asthma attacks are connected one after another, even month after month. Prevention of respiratory tract infections need to pay attention to living room light, ventilation, maintain the appropriate indoor temperature and humidity; strengthen nutrition, drink more boiled water, enhance the body’s resistance; less to crowded occasions to reduce cross-infection; pay attention to prevent local epidemic of influenza in childcare institutions, schools and families. 4. Other. The number and chances of inhaling allergens increase in spring when outdoor activities and sports increase accordingly, making asthma attacks easier. In addition, emotional factors, drugs (such as aspirin, certain antibiotics, bacterial vaccines, antivenom) and food factors (such as fish and shrimp, candy, certain beverages, etc.) may cause spring asthma attacks. Therefore, it is possible to reduce or alleviate the number of asthma attacks by appropriately limiting hyperactivity and exercise, keeping a calm mind, and paying more attention to medication and food, and even if an attack occurs, it will be less severe, and if combined with effective treatment, it is possible to control asthma without attacks in the long term.