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DNA甲基化是表观遗传学内容之一，在精子发生和胚胎发育中有重要作用。近年来，国内外众多研究发现男性不育症(尤其是精液质量异常)与DNA甲基化异常有关。本文重点阐述了印记基因、一些重复元件和非印记基因异常甲基化与精液质量(包括精子数目、形态和活力)的相关性，旨在进一步研究男性不育的具体机制，为将来临床治疗男性不育症提供新的思路和方法。“,”DNA methylation as an important aspect of epigenetics plays an important role in spermatogenesis and embryo development. In recent years, many studies have found that male infertility, in particular abnormal semen quality, is related to abnormal DNA methylation. To further delineate the pathogenesis of male infertility and provide new ideas for the treatment of male infertility, a comprehensive review over the correlation between abnormal methylation of imprinted genes, repetitive DNA elements and non-imprinted genes, semen quality (including sperm count, morphology, and vitality) and male infertility is provided.