Objective:To investigate the effect of the Traditional Chinese Medicine (TCM) intervention on the pregnancy outcomes of patients with a history of spontaneous abortion due to kidney deficiency syndrome.Methods:From February 2015 to July 2020, 41 patients with a history of spontaneous abortion due to kidney deficiency in our hospital were selected as the observation group, and 42 healthy pregnant women with no history of spontaneous abortion were selected as the control group. The observation group was treated with the TCM sequential intervention therapy with treatment principles of nourishing the kidney and promoting blood circulation before pregnancy and solidifying the kidney and tonifying after pregnancy, while the control group received no TCM intervention before and after pregnancy. Color Doppler ultrasonography was used to record the follicle diameter, endometrial thickness and shape during pregnancy, and B-ultrasound was used to monitor the NT value at 12 weeks. The serum D-dimer level was detected by ELISA, and the serum progesterone ,estradiol, human chorionic gonadotropin (HCG) levels were detected by radioimmunoassay. The conditions of term delivery, premature delivery and abortion were observed in both groups, and the successful delivery rate and term delivery rate were compared.Results:On the 30+, 40+, and 50+ days of pregnancy, there was no significant difference in serum progesterone, estradiol, and HCG levels between the two groups ( P>0.05). There was no significant difference in NT value between the two groups at 12 weeks of gestation ( P>0.05). The successful delivery rate of the observation group was 90.2% (37/41), the full-term delivery rate was 85.4% (35/41), the successful delivery rate of the control group was 100.0% (42/42), and the full-term delivery rate was 95.2% (40/42), there was no significant difference in the successful delivery rate and term delivery rate between the two groups ( P>0.05). Conclusion:The sequential intervention of TCM the principle of invigorating kidney and promoting blood circulation before pregnancy and strengthening kidney and calming fetus after pregnancy can improve the pregnancy outcome of spontaneous abortion patients with kidney deficiency syndrome.