In Chinese medicine, spontaneous miscarriage due to phospholipid antibody positivity is considered to be caused by deficiency of the spleen and kidneys and failure of the fetal element as the main pathogenic mechanism, while lack of intercourse between the heart and kidneys and failure of water and fire are also important factors in recurrent miscarriage. Modern medicine believes that the occurrence of this disease is related to thrombosis, trophoblast cell damage and invasion disorders, inflammation and complement activation. Although Chinese and Western medicine have different theoretical systems and different ways of understanding the etiology and mechanism of the disease, there are still many commonalities: the spleen and kidney function in Chinese medicine is related to the immune function in modern medicine, and the deficiency of both spleen and kidney manifests as abnormal immune function; while the inflammation and complement activation in modern medicine are also a manifestation of abnormal immune function; blood stasis in Chinese medicine corresponds to thrombosis in modern medicine; blood stasis and damp-heat The blood stasis and damp-heat are intertwined in the uterus, resulting in damage to the uterus, loss of nourishment for the fetus, and withering of the fetal element, which is similar to the formation of thrombus in the placental vessels, impaired placental circulation, and reduced placental function, leading to miscarriage, which shows that the understanding of this disease in Chinese and Western medicine is similar.