The airways of children with asthma often have persistent allergic inflammation and airway hyperresponsiveness. Data from the American Lung Association and the American Academy of Pediatrics indicate that more than 3,000 children die each year due to food allergies and asthma, and there are more than 1 million emergency room visits/year for children due to food allergies and asthma. Fall and winter are good seasons for asthma. Children with asthma are extremely sensitive to changes in ambient temperature and humidity, and have weak adaptive capacity, making them susceptible to sudden temperature drops that can cause morbidity. Children are very susceptible to bronchial asthma due to cold air inhalation, and upper respiratory tract infections. At this time, the temperature is very favorable for the reproduction of viruses, mycoplasma and other microorganisms and mites, the climate is dry and dusty, pathogenic microorganisms and mites are wrapped in it, and the allergic components in the air increase significantly, which will lead to the aggravation of allergic inflammation in the airways of children with asthma. Therefore, if the cold wave comes without protection for children with asthma and they inhale a large amount of cold air, mites or pathogenic microorganisms, etc., asthma may be triggered. Recommendations to strengthen the management of children with asthma when the weather turns cooler The management of asthma in children should, firstly, standardize the treatment of asthma; secondly, avoid as much as possible the triggering factors for asthma attacks (such as exposure to cold, passive smoking, consumption of allergic food or too cold food, etc.); thirdly, parents should bring their children to the hospital in time for acute asthma attacks. Properly understand asthma treatment drugs and do not reduce the dosage of asthma control drugs easily. Asthma is a chronic disease, and treatment must be standardized and systematic. There are many kinds of medications for asthma treatment, which are simply divided into two categories: one is the curative medication (also known as asthma control medication), which can effectively control asthma and requires long-term use; the other is the curative medication (also known as asthma relief medication), which is only used for a short period of time during acute asthma attacks. It is recommended not to reduce the dosage of asthma control medication easily in seasons with significant weather changes, even if the asthma symptoms are better controlled. Asthma control medications are mainly inhaled glucocorticoids (ICS), which can effectively reduce airway inflammation and airway hyperresponsiveness, control asthma symptoms, improve quality of life, improve lung function, reduce asthma attacks, and reduce asthma mortality, and are the most effective medications for treating airway inflammation. After the asthma symptoms are controlled, the patient should be evaluated regularly at least every 1 to 3 months at the hospital and the follow-up treatment plan should be determined based on the evaluation results. Parents should follow medical advice and not change the dose of asthma control medication without permission, especially when the weather turns cooler do not reduce or stop the medication easily as this may easily lead to an asthma attack. Short-term escalation of asthma control medication may be considered when cold symptoms are evident. Most upper respiratory tract infections in children are viral, and viral infections are a major trigger for acute asthma attacks. Acute wheezing attacks are often preceded by nasal symptoms such as sneezing, runny nose and coughing, and there is usually a “window of opportunity” of about 5 days between the onset of the aura and the acute wheezing attack. The risk of subsequent acute asthma attacks can be effectively reduced by preemptive intervention during this window. The results of the MIST (Maintenance vs. Intermittent Inhaled Steroids in Wheezing Toddlers) study may be taken into account and a regimen of budesonide suspension 1 mg/dose twice a day for 7 days may be used. (For non-medical professionals, please visit your outpatient physician) Avoid cold air inhalation as much as possible. When a cold wave comes, do not let cold air be inhaled directly as much as possible, and avoid strenuous outdoor physical activities; when the temperature difference between indoor and outdoor is large, take care not to let children with asthma walk suddenly from a warm room to the cold outdoor, and take proper protective measures to pay attention to warmth before going out; you can wear a mask, and pay more attention on foggy days. Prevent respiratory tract infections. During the flu season, it is best not to take children with asthma to crowded places, such as supermarkets, cinemas, fairs, etc. Try to avoid contact with patients with colds; pay attention to indoor air circulation and keep indoor air fresh; develop good hygiene habits, wash face and hands regularly, and avoid others when coughing and sneezing; strengthen physical fitness and resistance. Try to avoid contact with allergens. Common allergens in autumn and winter are cold air, house dust, mites, animal dander, smoke, viruses and other microorganisms, as well as certain animal (such as shrimp, crab, shellfish, eggs, milk, etc.) or nut (such as walnuts, peanuts, pistachios, chestnuts, etc.) foods, etc. Children with asthma should try to avoid contact, inhalation or ingestion. For example, dryness and ventilation are the best ways to eliminate mites; it is best not to lay carpets indoors; asthmatic children should try to avoid holding and playing with stuffed toys; parents are advised to use wet rags for hygiene to avoid raising dust and reduce the chances of mites spreading in the air; prevent passive smoking in asthmatic children; do not keep pets and plant flowers indoors; try to avoid exposure of asthmatic children to household sprays, paints, etc.; and avoid abuse of Antibiotics.