According to the abnormal manifestation of the X-ray chest film, 90 cases were classified into regional shadow and diffuse volume increasing parts. The regional postural drainage method was adopted in the former, all directional postural drainage was performed in the latter. Each part of cases was classified into postural drainage plus ultrasonic aerosol inhalation group, ultrasonic aerosol inhalation and the control group. The results showed that there were significant differences among the parameters of the body temperature, coughing, stridor, rales and the chest film (P < 0.01). The therapeutic effects of the inhalation group was predominantly better than that of the control group with the routine drug treatment, while that of the drainage was more better than that of the inhalation group. It is suggested that the drainage as an adjuvant treatment to treat the obstructive respiratory tract diseases was a cheap, practical, non-damage and worthy advocating method.