Abstract： Objective： To observe the clinical efficacy of Bushen Antai Soft Extract in treating recurrent miscarriage in antiphospholipid syndrome（APS）of kidney deficiency and blood stasis type. Methods： A total of 120 APS patients with recurrent miscarriage of kidney deficiency and blood stasis type， all in early intrauterine pregnancy， were selected from the outpatient and inpatient departments of gynecology and obstetrics at Shouguang Hospital of Traditional Chinese Medicine between January 2022 and June 2024. They were divided into the observation group and the control group according to the random number table method， with 60 cases each. The control group received subcutaneous injections of low-molecular-weight heparin sodium and oral dydrogesterone， while the observation group was additionally given Bushen Antai Soft Extract orally. Both groups were treated until the 12th week of pregnancy. Clinical efficacy was evaluated， and comparisons were made between the two groups regarding traditional Chinese medicine syndrome scores， uterine artery blood flow， plasma D-dimer levels， serum β-human chorionic gonadotropin（β-HCG），progesterone（P），estradiol（E2）levels，and antibody seroconversion rates after treatment. Results：The total effective rate in the observation group was 93.33%（56/60），higher than the 78.33%（47/60）in the control group， the difference being significant（P＜0.05）. After treatment， traditional Chinese medicine syndrome scores decreased in both groups（P＜0.05）， with the observation group showing lower scores than the control group （P＜0.05）. By the 10th week of pregnancy，β-HCG，P，and E2 levels increased in both groups compared with pretreatment levels（P＜0.05），with the observation group exhibiting higher levels than the control group（P＜0.05）. After treatment，D-dimer levels decreased in both groups（P＜0.05），with the observation group showing lower levels than the control group（P＜0.05）. Additionally， the systolic-to-diastolic ratio（S / D）， pulsatility index（PI）， and resistance index（RI）of uterine artery blood flow decreased in both groups（P＜0.05）， with the observation group demonstrating lower values than the control group（P＜0.05）. The antibody seroconversion rate in the observation group was 81.67%（49 / 60）， significantly higher than the 63.33%（38 / 60）in the control group， the difference being significant（P＜0.05）. Conclusion：Bushen Antai Soft Extract is effective in preventing miscarriage in APS patients of kidney deficiency and blood stasis type. It improves post-pregnancy sex hormone levels，regulates immunity，enhances uterine artery blood supply， increases the success rate of pregnancy maintenance， and reduces the occurrence of recurrent miscarriage.