Objective: To explore the improvement effect and mechanism of Shaofu Zhuyu Decoction (少腹逐瘀汤) on rats with endometrial receptivity. Methods: Ten female SD rats were randomly selected as control group. The remaining female rats were used to establish the model of dysreceptivity of endometrium. The model rats were randomly divided into model group, estradiol valerate (0.27 mg/kg) group, Shaofu Zhuyu Decoction low- and high-dose (144, 288 mg/kg) groups, each with nine rats. After administration, the female and male rats were arranged in a cage...