Objective:To observe the effects of Bushen Huoxue Recipe on endometrial receptivity and clinical pregnancy rate of patients with thin endometrial ovulation disorder in clomiphene promoted ovulation cycle. Methods60 patients with thin endometrial ovulation disorder were randomly divided into the control group and treatment group, 30 cases in each group. Both groups were treated with clomiphene to promote ovulation. The control group was orally treated with estradiol valerate, the treatment group was treated with Bushen Huoxue Recipe based on the treatment for the control group. The treatment course was one menstrual cycle in both groups with follow-up after 3 menstrual cycles. The clinical pregnancy rate was observed. The changes on endometrial thickness and type, uterine attery pulsatility index (PI) and uterine attery resistance index (RI) on the day of ovulation were compared between the two groups.  Results:①After treatment,the improvement on endometrial thickness and proportion of A type endometrium in the treatment group was significantly better than that in the control group(P＜0.05). ②After treatment,the decrease of PI and RI in the treatment group were greater than those in the control group(P＜0.05). ③After 3 menstrual cycles,the clinical pregnancy rates of the treatment group and the control group were 43.3% and 26.7% respectively. There was statistically significant difference on the clinical pregnancy rate between the two groups, and the clinical pregnancy rate of the treatment group was significantly higher than that of the control group(P＜0.05).  Conclusion: In clomiphene promoted ovulation cycle, Bushen Huoxue Recipe combined with estradiol valerate can increase the endometrial receptivity of patients with thin endometrium, and thus improve the pregnancy rate.