Abstract：Objective：To discuss the application value of color Doppler ultrasonography in syndrome differentiation typing for polycystic ovary syndrome(PCOS). Methods： Selected 130 cases of patients withpolycystic ovary syndrome who were admitted and treated in our hospital during June 2017 to January 2019， and they received examinations viacolor Doppler ultrasonography. Statistically analyzed the condition of Chinese medicine syndrome differentiation typing，and the indexes of ovarian hemodynamics and ovarian morphology in patients with different syndrome types. Results：Among enrolled cases，there occurred 37 cases of kidneydeficiency and liverdepression type， 28 cases of kidneydeficiency and bloodstasis type，20 cases of intermingled phlegm and blood stasis type， and 45 cases of spleendeficiency and phlegmdampness type.Comparing the values of PI， RI， PSV and EDVamongpatients ofeach syndrome type， there were significant differences being found after F- test(P＜0.05). The values of PI and RI in patients of kidneydeficiency and bloodstasis type and intermingled phlegm and stasis type were significantly higher than those in patients of kidneydeficiency and liverdepression type and spleendeficiency and phlegmdampness type(P＜0.05)；the values of EDV and PSV in patients ofkidneydeficiency and bloodstasis type and intermingled phlegm and stasis type were significantly lower than those in patients of kidneydeficiency and liverdepression type and spleendeficiency and phlegmdampness type(P＜0.05). Comparing ovarian volume， follicular number， ovarian area， medullary area and area ratio among patients ofeach syndrome type， there were significant differences being found after F-test(P＜0.05). The ovarian volume in patients of spleendeficiency and phlegmdampness type and intermingled phlegm and stasis type was significantly larger than that in patients of kidneydeficiency and liverdepression type and kidneydeficiency and bloodstasis type(P＜0.05)； the ovarian volume in patients of spleendeficiency and phlegmdampness type was significantly larger than that in patients of intermingled phlegm and stasis type(P＜0.05). The follicular number in patients of spleendeficiency and phlegmdampness type and intermingled phlegm and stasis type was significantly higher than that in patients of kidneydeficiency and liverdepression type and kidneydeficiency and bloodstasis type (P＜0.05)；the follicular number in patients ofspleendeficiency and phlegmdampness type was significantly higher than that in patients of intermingled phlegm and stasis type(P＜0.05). Conclusion：The detection of indexes in ovarian hemodynamics and morphology via color Doppler ultrasonography can provide guidance for Chinese medicine syndrome differentiation typing for polycystic ovary syndrome.