Abstract:Objective: To evaluate the clinical effect of Xuanbai Chengqi tang therapeutic aspiration syndrome. Method: A randomized, controlled study methods, seting Xuanbai Chengqi tang group and the control group. Each group is divided into two subgroups of patients group mechanical ventilation (MV) and non-mechanical ventilation (NO-MV). Control group, the use of conventional Western medicine treatment;Xuanbai Chengqi tang group, on the basis of conventional Western medicine, Plus Xuanbai Chengqi tang orally. ① Observations content include:before treatment and after 5 days oxygenation index (PaO2/FiO2), body temperature, white blood cell count, C-reactive protein (CRP) and so on. ② Therapeutic evaluation:after 2 weeks of treatment, patients were evaluated prognosis of lung injury. Result: ① After 5 days treatment, Xuanbai Chengqi tang group comparison control group between subgroups, Whether NO-MV or MV two subgroups oxygenation index, temperature difference was statistically significant (P<0.05) and but body temperature, white blood cell count, the two groups only in the NO-MV subgroups were significantly different (P<0.05). ② After 2 weeks of treatment, two groups patients were evaluated prognosis of lung injury, there are statistically significant difference in clinical effect (P<0.05). Conclusion: Based on the conventional Western medicine treatment, with the Prescription of Xuanbai Chengqi tang helps reduce the patient's lung damage, improve the therapeutic effect, its mechanism may reduce the systemic inflammatory response.