Asthma in children is a series of clinical symptoms such as coughing, wheezing and sputum production caused by a highly sensitive reaction of the bronchial tubes of allergic individuals to certain foreign substances, resulting in bronchospasm, edema and congestion of the bronchial mucosa and increased endobronchial secretion. The causes of asthma are endogenous and exogenous. The endogenous cause is the allergic constitution of the affected child, and the child’s parents or relatives often have asthma or other allergic diseases; the exogenous cause is infection, pollen, dust, fish and shrimp, drugs, parasites and moldy toys, etc. Asthma attacks in children can be sudden onset of coughing, dyspnea, wheezing, sputum, mostly at night and early morning, irritable and restless when severe, unable to lie down, the symptoms reduce or disappear during the day, recurrent attacks, simple taking general cough medicine and antibiotics is ineffective. Children with asthma should go to a qualified hospital for an allergen test to find out the cause of allergy, and can be desensitized to the allergen, and should also try to avoid contact with the allergen to reduce attacks. Inhalation therapy provides an extremely effective treatment for asthma, but the key to successful treatment depends on the cooperation between parents and doctors, and systematic use of medication under the guidance of doctors, never medication during an attack and stopping once the asthma stops. This is the cause of recurrent asthma attacks. Parents also need to cooperate with the doctor in self-management of the child, i.e., to have an understanding of the occurrence of asthma and how to avoid triggers, to be able to apply inhalation therapy correctly, to anticipate asthma attacks, and to have some preliminary knowledge of emergency measures in case of an attack to reduce the number of trips to the emergency room and hospitalization. Infants and children with lower respiratory tract cough and wheeze can usually be divided into two types: one type of wheeze is induced by recurrent viral infections, which can be diagnosed as asthmatic bronchitis or wheezing bronchitis, a self-limiting disease with onset under 1 year of age and gradual elimination of cough and wheeze after 3-6 years of age; the other type is asthma, which also develops within 1 year of age with recurrent episodes of cough and wheeze, and its triggering factors are also related to respiratory viral infections. The triggering factors are also related to respiratory viral infections. Most asthma starts within the age of 1 year, and it is a chronic episodic disease that affects the physical development of children who are developing physically and mentally. In children with frequent severe attacks, emphysema and thoracic deformities develop, which greatly affects the child’s life and learning. Asthma is a chronic non-bacterial inflammatory disease of the airways, which begins to exist at the onset of the disease and continues to exist during the remission period, with the inflammation worsening with each attack, and the mucosa being repeatedly destroyed and replaced by the process of fibrosis, which becomes more pronounced the longer the disease lasts. Fibrosis is an irreversible change and can eventually become permanent damage, making cough and asthma symptoms persistent and unrelieved. The most fundamental drug currently used in the treatment of asthma is the insistence on long-term uninterrupted use of non-antibacterial anti-inflammatory drugs.