OBJECTIVE To discuss the infection rate of Chlamydia trachomatis(Ct) and Ureaplasma urealyticum(Uu) in patients with non-gonococcal infection.METHODS Fluorescence quantitative PCR method was used on 1025 cases and 30 cases of NGU patients for Ct and Uu detection.RESULTS Of 1025 NGU patients,positive Ct alone accounted for 156 cases,the positive rate was 15.22%.505 cases were separate Uu,the positive rate was 49.27%.Ct,Uu mixed in 217 cases,the positive rate was 21.17%.The detection rate was 85.66%.Uu infection rate in women was more than that in men(?2 = 104.56 P0.05).of control group,the Ct Uu Results negative.CONCLUSIONS In NGH patients,Uu is most common pathgen in man and woman.To diagnosis of NGU,Uu and Ct should be followed by Ct infection rate but no gender tested at the same time to avoid missed diagnosis.