Recurrent spontaneous abortion(RSA)refers to two or more consecutive spontaneous abortions, which is a common pregnancy ⁃ related disease in women. It is difficult to make an exact etiological diagnosis for there lacks specific clinical manifestations and signs in most RSA patients,and more laboratory tests are acquired. The etiology of RSA is complex and relates to multiple disciplines. There are still many disputes in the definition, diagnosis,and treatment of RSA when comparing internal consensus and external guidelines. Hence,it is easy to confuse clinical diagnosis and treatment of RSA. This article intends to discuss the controversial issues in diagnos⁃ ing and treating RSA based on these consensuses and guidelines.