The purpose of this study is to assess whether Acupoint Sticking in Treating Winter Diseases in Summer is effective in the treatment of chronic asthma.

Asthma is a common chronic disease with an estimated 300 million worldwide. Treating Winter Diseases in Summer of traditional Chinese medicine treatment of asthma has a long history. But there are less related clinical trials. The purpose of this study is to assess whether Acupoint Sticking in Treating Winter Diseases in Summer is effective in the treatment of chronic asthma.

After screening period, participants will undergo a physical examination, lung function, blood and induced sputum collection while being randomly assigned to one of the following 2 groups for 6 weeks during summer dog days of treatment:

Group A will receive acupoint sticking treatment of Chinese herbal medicine and magnetic stickers once every two days； Group B will receive acupoint sticking treatment of Chinese herbal medicine and sham magnetic stickers once every two days.

Questionnaires to assess asthma control and quality of life will be completed. A physical examination, blood collection, and induced sputum collection will occur at selected visits.

Inclusion Criteria:

• Patients diagnosed with mild-to-moderate remission phase of asthma
• Patients who have given written informed consent

Exclusion Criteria:

• Participation in another clinical trial 1 month prior to study entry
• Participation received acupoint sticking of winter disease cured in summer
• Use of corticosteroids 4 weeks prior to study entry
• Patients who are allergic to therapeutic medicine
• Female patients in lactation period, pregnancy or planning to get pregnant during the trial
• Patients with severe primary diseases such as cancer, cardiovascular system, digestive system, kidney and hematopoietic system diseases
• Patients with mental illness, acrasia