Abstract: Asthma is a children’s most common chronic respiratory inflammatory disease. In recent years, with the improvement of people’s living conditions and changes of lifestyle, the prevalence of childhood asthma increased from 0.91% in 1990 to 2.50% in 2000. Therefore, timely and accurate diagnosis and adherence to long-term, continuous, standardized and individualized treatment is important to patients, especially to young children under 5 years old. Additionally, strengthening education and training of primary health care workers and family members of patients, making use of modern media to disseminate asthma knowledge, will have play active part on early intervention and control of asthma.