Objective: To investigate efficacy of the Yupingfeng particles plus montelukast on bronchial asthma. Methods: 60 cases in the control group were treated by conventional treatment; and 60 eases in the observed group were treated with the Yupingfeng particles and Montelukast more. Clinical efficacy, the time of symptoms disappearing, hospitalization time and the improvement of lung function in two groups were compared. Followed-up for 6 months. Results: The total efficiency (95%) in the observed group was significantly higher than 78% in the...