Abstract: OBJECTIV To explore the influence of solid bennin lung on COPD patients with respiratory tract infections receiving inhaled corticosteroid therapy and analyze the efficiency of clinical treatment of the COPD patients so as to provide reliable basis for clinical treatment. METHODS A total of 160 COPD patients who were treated in the hospital from Jun 2013 to Jun 2016 were enrolled in the study and divided into two groups, with 80 cases in each group. The control group was treated with conventional therapy, while the observation group was given additional solid bennin lung therapy based on the conventional therapy. The clinical efficacy and incidence of respiratory tract infection were compared between the two groups of patients after the treatment, and the immune function was observed and compared before and after the treatment. RESULTS The levels of CD3 and CD4 of the two groups of patients were elevated after the treatment, which were elevated more significantly in the observation group than in the control group (P<0.05). The level of CB8 of the two groups of patients declined, which declined more significantly in the observation group than in the control group (P<0.05). There was 1 cases of upper respiratory tract infection and 1 case of pharyngeal fungal infection in the observation group, the incidence rate was 2.5%; there were 4 cases of upper respiratory tract infection, 3 cases of lower respiratory tract infection, and 2 cases of pharyngeal fungal infection, and the incidence rate was 11.25%; the incidence rate of respiratory tract infection of the observation group was significantly lower than that of the control group, and there was significant difference (P<0.05). The total effective rate of the observation group was 92.5%, significantly higher than 71.25% of the control group (P<0.05). CONCLUSION As for the treatment of the COPD patients who receive inhaled corticosteroid therapy, solid bennin lung may enhance the therapeutic effect, reduce the incidence of respiratory tract infection, and improve the immune function, with the effect remarkable, and it is worthy to be promoted in the hospital.