Abstract: The main risk factors of recurrent spontancous abortion(RSA) include genetic, anatomical and endocrine factors, infection, immune dysfunction, pre-thrombotic state, systemic diseases of pregnant women and environmental factors. Clinical studies have shown that sperm quality is closely related to embryo development potential. The sperm-related factors of RSA, a variety of abnormalities in traditional semen parameters, sperm function parameters and sperm DNA / chromatin integrity, were reviewed, which provides a reference for clinical diagnosis and treatment of RSA.

Key words: Spermatozoa, Abortion, habitual, Sperm motility, DNA Fragmentation