Established the mouse infertility receptor model by intraperitoneal injection of busulfan.3.Successfully completed the spermatogonial stem cell transplantation by using the efferent ductules of testis microinjection. 4. 建立了白消安腹腔注射法不育受体小鼠模型。3、成功运用输出小管显微注射技术完成精原干细胞移植。