This paper takes comprehensive analysis of etiology

pathogenesis and treatment of polycystic ovary syndrome（ PCOS） complicated with recurrent spontaneous abortion（ RAS）. It also summarizes that the cause is kidney deficiency and the symptoms are stagnant fire in heart and liver

phlegm-dampness and blood stasis. Treatment includes two stages

which are pre-pregnancy stage and after pregnancy stage. Concrete therapy includes treating the causes by strengthening the deficiency in advance

reinforcing kidney and regulating menstrual cycle

combined with treating the symptoms by soothing liver

relieving heart

activating blood

removing stasis

drying dampness and dispersing phlegm

and treating both causes and symptoms to regulate ovarian function in pre-pregnancy stage. After patient is pregnant

treatment of reinforcing kidney and calming fetus with Chinese herbs combined with West Medicine of corpus luteum support therapy should be applied as early as possible to prevent miscarriage. This method followed the thought of preventive treatment of disease and could be effective therapeutic strategy of PCOS complicated with RAS.