OBJECTIVE： To explore the effects of Bushen huoxue huatan decoction on ovarian blood supply and form in model rats with polycystic ovarian syndrome （PCOS）. METHODS： 50 SD female rats were randomized into normal control group， model group， positive control group [rosiglitazone， 3 mg/（kg·d）]， Bushen huoxue huatan decoction low-dose and high-dose groups [5.0， 7.5 g/（kg·d）]， with 10 rats in each group. Except for normal control group， PCOS model was induced in the other groups by Poresky method. After modeling， treatment groups were given relevant medicine intragastrically. The normal control group and model group were given normal saline [10 mL/（kg·d）] intragastrically， once a day， for 22 days. After the end of administration， the rats were sacrificed. The microvessel density （MVD） was recorded. mRNA expression of vascular endothelial growth factor （VEGF），  ovarian angiotensin Ⅱ receptor （Ang Ⅱ） type 1 （AT1） and type 2 （AT2）， G-protein coupled receptor MAS were all detected in ovarian tissue of rats. The ovarian form was observed. RESULTS： Compared with normal control group， MVD of model group and treatment groups were all increased， while mRNA expression of AT1， AT2 and MAS were down-regulated （P＜0.05）； cystic sinus sollicle， the decrease of granular cell layer， egg mother cells disappearance， the decrease of luteal tissue and other obvious pathological changes could be found in ovarian tissue of rats in model group. Compared with model group， above indexes of treatment groups were improved significantly， and the effects of Bushen huoxue huatan decoction low-dose and high-dose groups were better than that of positive control group （P＜0.05）. The pathological changes of ovarian tissue in treatment groups were all improved to certain extent. CONCLUSIONS： Bushen huoxue huatan decoction can improve ovarian blood supply， angiogenesis and ovulation in PCOS rats. It is beneficial to improve ovarian form.