Dr. WANG Caiwen, as the academic heir of ZHU Nansun, his main treatment method for recurrent spontaneous abortion (RSA) is to supplement Kidney and strengthen Spleen, and regulate Chong and Ren before pregnancy; tonify Kidney and nourish blood to prevent miscarriage after being pregnant. The syndrome before getting pregnant is divided into three patterns according to the clinical symptoms and physical constitutions, i. e. deficiency of Spleen and Kidney, deficiency of ,qi, and blood, as well as blood stasis. The therapy of activating blood, nourishing blood and removing blood stasis was carried out throughout pregnancy. Dr. WANG Caiwen likes using herbs with warm feature and thinks highly of Spleen and Stomach during the treatment. In terms of miscarriages prevention, Dr. WANG is used to applying herbs with actions of activating and nourishing blood to improve the blood supply of uterine and to promote the growth of embryo. Using the modern detection technology, differentiation of symptoms and signs to identify etiology, combined with differentiation and disease differentiation improves the cure rate of RSA greatly.