Asthma in children is the most common chronic respiratory disease and it is not easy to understand the occurrence, progression and regression of the disease in a short period of time due to repeated visits and long medical history of the child. It is estimated that it takes three times longer to see a child with asthma than an average child, so child asthma clinic sessions and extended sessions have become the norm. Why does it take so long to see a child with asthma? For the first visit, a detailed medical history is required, including the duration of the cough and wheeze, the treatment process, the age of the first wheeze, the number of recurrent wheezes, whether asthma has ever been diagnosed, the treatment process, the type of inhalation medication used, and the inhalation method. The presence of allergic rhinitis, the number of colds, and the time of improvement of each cold. History of eczema, urticaria, food and drug allergies. Family history of asthma and allergic rhinitis. Next a detailed physical examination is performed including sinus, tonsil size, and pulmonary signs. Pulmonary function and exhaled breath NO measurements are then performed. Finally, the diagnosis and classification of asthma is determined based on history, signs and laboratory tests. After the diagnosis of asthma is confirmed is the selection of appropriate therapeutic drugs. For asthma under 5 years of age, pressure quantitative aerosol is given, for over 5 years of age, dry powder inhalation drugs are given, short-acting relief drugs should also be given for acute attacks, and allergic rhinitis should also be treated accordingly. After choosing the medication, teach the child how to inhale the medication in person. The parents and the child should be explained the role of the medication, the timing of each medication, and the precautions to take. The next step is to explain to the child the total course of asthma treatment, the precautions to be taken in life, and when to return to the clinic. The next step is to explain to the child the total course of asthma treatment, the precautions to be taken in life, when to come back for a follow-up appointment, and how to make an appointment. In addition, we will enter the child’s information into the computer to provide a basis for the child’s follow-up.