Children with cough, chest tightness and wheezing at any age, especially those with allergies such as eczema; 2. coughing continuously for more than a month and the effect of antibiotic treatment is not satisfactory; 3. children with recurrent cough that does not heal; 4. coughing and wheezing easily after exercise, weather changes and at night; 5. frequent colds, runny nose, sneezing, itchy nose and itchy eyes. In short, mistaking asthma for a cold, bronchitis, wheezing, or pneumonia will, in turn, delay treatment. As the symptoms of children with asthma are not typical, the clinical manifestations are only recurrent cough, sometimes accompanied by symptoms of allergic rhinitis, such as frequent sneezing and runny nose, they are mistaken by parents for recurrent colds or bronchitis or pneumonia, and some parents think that their children cannot be asthmatic and are unwilling to come to the asthma clinic, thus leaving the sick children without effective treatment, resulting in recurrent attacks, delaying the time of treatment and affecting the This delays treatment and affects the growth and development of the child.