Professor Zhang Jinfeng has been engaged in clinical gynecology for many years, and has rich clinical experience in treating Recurrent spontaneous abortion, especially for the modern research hot spot recurrent miscarriage caused by prethrombotic state, and has formed a relatively complete diagnosis and treatment plan, that is, "Qing, species, security" three-step method. Professor Zhang holds that Recurrent spontaneous abortion-Prethrombotic state is related to the heart, liver, spleen and kidney, and the blood stasis of responsibility. The treatment mainly focuses on tonifying the kidney and promoting blood circulation, supplemented by strengthening the spleen and nourishing the blood, soothing the liver and nourishing the heart, eliminating and reinforcing simultaneously.