Recently Assisted Reproductive Technique (ART) plays an important role in treating infertility. As one of the thorny factors, the thin endometrium was received more attention from clinical physicians. The article collected the clinical experience and medical cases of Profess Xia Tian in treating thin endometrium in embryonic implantation. Professor Xia Tian considered pathogenesis of thin endometrium was rooted in deficiency of the spleen and kidney, and manifested as qi deficiency, cold coagulation and blood stasis. The treatment should tonify the kidney and invigorate the spleen, as well as tonify qi, activate blood and remove blood stasis.