Introduction: Asthma patients in life should pay attention to treatment methods, asthma patients should pay attention to care, good care methods can accelerate recovery, asthma patients should be careful care, pay attention to the details of the diet, asthma conditioning is also a lot of methods. What are the causes of pediatric asthma? How to pay attention to prevention? The following is the author to introduce for parents. 1, environmental factors air pollution, smoke and other factors that cause damage to the airways is a factor affecting pediatric asthma; 2, infection, especially colds, tonsillitis and other upper respiratory tract infections are factors affecting pediatric asthma; 3, genetic factors are also factors affecting pediatric asthma, research has found that asthma often has a family genetic tendency, parents with asthma, it greatly increases the incidence of children; 4, allergies are important One of the factors affecting pediatric asthma, exposure to allergens food allergens are most commonly proteins such as meat, eggs and milk, followed by fish and shrimp and other seafood, in addition to certain additives such as coloring in snacks are also more common allergens; environmental allergens are mainly scattered in the air pollen, soot, mosquitoes, home furnishing paint and other abnormal odors; 5, strenuous exercise, emotional stimulation, etc. All of the above causes can cause bronchospasm, mucous membrane edema, increased secretions, duct obstruction, narrowing of the airway leading to the onset of respiratory distress. Warm tips: asthma is not well understood by many people, but the causes of asthma are many, asthma is a very serious disease, people need to understand the symptoms of this disease in life. Asthma does not occur for no reason, timely detection of the existence of various conditions to better reduce the harm of the disease to children.