Objective：To discuss the clinical value of applying color doppler ultrasound for diagnosis in classification of Chinese medicine syndrome of patients with polycystic ovary syndrome.Methods：A total of 202 cases of patients with polycystic ovary syndrome were selected as the study subjects；according to the classification of Chinese medicine syndrome，they were divided into the kidney deficiency and liver depression type(51 cases)，the kidney deficiency and blood stasis type(45 cases)，the spleen deficiency and phlegm-dampness type(75 cases)and the binding of phlegm and stasis type(31 cases).All patients received color doppler ultrasound for diagnosis，and their ovarian morphology and hemodynamic parameters were evaluated.Results：The pulsatility index(PI)and resistance index(RI)in the kidney deficiency and blood stasis type group and the binding of phlegm and stasis type group were higher than those in those in the other two groups(P＜0.05)，and the peak systolic velocity(PSV)and end diastolic velocity(EDV)in the spleen deficiency and phlegm-dampness type group and the binding of phlegm and stasis type group were lower than those in the other two groups(P＜0.05).The ovarian volume，number of follicles and body mass index in the spleen deficiency and phlegm-dampness type group and the binding of phlegm and stasis type group were higher than those in the other two groups(P ＜ 0.05)；the ovarian area and ovarian stroma area in the spleen deficiency and phlegm-dampness type group were larger than those in the other three groups(P＜0.05).Conclusion：The application of color doppler ultrasound in classification of Chinese medicine syndrome of patients with polycystic ovary syndrome has significant clinical value.The syndrome types of the disease were classified by the evaluation of ovarian volume，number of follicles，ovarian areaand blood flow velocity.