Abstract: Selenium (Se), as one of the essential micronutrient for human beings and animals, plays an important role in maintaining body health. Given that the daily Se intake in some Se-deficient areas of China cannot meet the recommended standard of the hygiene industry (WS/T 578.3—2017), it is still an urgent task to develop organic Se biofortification supplements through Se enrichment, and increase organic Se conversion efficiency and Se bioaccessibility. Se usually interacts with amino acids in the process of biological metabolism and synthesizes with proteins. Earthworm is a kind of soil animal with high protein content. This paper systematically analyzed the biofortification of Se by earthworm Eisenia fetida, from the aspects of Se accumulation and transformation in E. fetida body, the effect of Se on the growth, reproduction and the nutritional components of earthworm body. Besides, the potential application of earthworms as Se-biofortified materials was discussed to provide theoretical basis or scientific support for the development of the Se-enriched agricultural industry.

Key words: selenium, Eisenia fetida, bioaccumulation and transformation, bioaccessibility, agricultural production

摘要： 硒（Se）作为人和动物必需的微量元素之一，在维持机体健康等方面发挥着重要作用。鉴于目前我国部分缺硒地区人均日摄入硒量仍不能满足卫生行业标准（WS/T 578.3—2017）推荐量，因此，寻找硒富集量大、有机硒转化效率高且生物可利用率高的硒强化材料的任务依然迫切。硒在生物体新陈代谢过程中多与氨基酸结合，进而参与构成蛋白质。蚯蚓是一类蛋白质含量较高的土壤动物，系统分析了蚯蚓对硒的富集转化、蚓体硒的生物可利用率、硒对蚯蚓生长繁殖和蚓体营养成分的影响，并对蚯蚓作为动物源硒强化材料的应用潜力进行了讨论与展望，以期为富硒农业产业的发展提供一定的理论依据和科学支持。

关键词: 硒, 赤子爱胜蚓, 富集转化, 生物可利用率, 农业生产