Bronchial asthma is a heterogeneous disease characterized by varying degrees of airway spasm, airway hyperresponsiveness, mucus secretion and chronic inflammation. Bronchial asthma is a common chronic disease that can be controlled. As long as through timely and correct diagnosis, long-term standardized treatment, regular use of inhaled glucocorticoids (ICS) and other treatments, bronchial asthma can be completely controlled. The global impact of bronchial asthma is enormous and its incidence is increasing year by year. Worldwide, 11.6% of children aged 6-7 years report symptoms of asthma. PM exposure is associated with a high incidence of asthma and has been shown to cause asthma symptoms. The incidence of smoking and obesity is also on the rise, and as a result, children of smokers have an increased incidence of bronchial asthma, and severe obesity is strongly associated with asthma in adult women. At present in the medical community on the causative factors of bronchial asthma is not conclusive, genetic factors, air quality and the child’s own immune system strength, etc., are factors that may cause the disease. Carpets, mattresses, sofas, upholstery and all kinds of stuffed toys are latent allergens that are triggers for bronchial asthma. At the same time, the increase in the number of household animals and the fur of dogs and cats can also cause allergic reactions and subsequently bronchial asthma. With the current medical treatment, asthma is still difficult to cure, but with long-term standardized treatment based on a correct understanding of bronchial asthma, asthma can be completely controlled, so that it will try not to have an attack or few attacks. When treating bronchial asthma, patients should be instructed to correctly recognize asthma, adjust their mindset and actively treat it. Try to avoid going to the possible disease-causing environment, strengthen their own exercise, improve their physical fitness, immunity, standardized inhalation of drugs, regular medical consultation and review, they can not arbitrarily stop taking medication.