Abstract: Objective To study technology of pruification treatment of sewage of hospital.Methods By using biological oxidation and ozone disinfection for the treated sewage of hospital,effects on quality of the sewage were investig ated.Results After sewage of hospital was treated,the quality was improved sig nificantly.Conclusion The purification technology of using biological oxidation and ozone disinfection was very effective for treatment of sewage of hospital,which could be widely applied to treat sew age of hospital.