本文观察日本血吸虫雄虫睾丸精子发育及支持细胞的超微结构。首次报道血吸虫精子发育及日本血吸虫生殖细胞的结构;精原细胞、精母细胞的特点。根据精细胞的形状、核质浓缩程度、线粒体的分布、顶体样结构的形成、残余体的结集与消失及周身微管的存在等特征,将精细胞分为Sda、Sdb、Sdc、Sdd 4型。它们镶嵌于支持细胞胞质之间,构成十分复杂的画面。文中介绍了顶体样结构及残余体的内容物,并对其由来与性质进行了讨论。 This article observes Schistosoma japonicum testicular sperm development and ultrastructure of supporting cells. The first report of schistosoma sperm development and Schistosoma japonicum germ cell structure; spermatogonia, spermatocytes characteristics. Sperms were divided into Sda, Sdb, Sdc and Sdd 4 according to the shape of sperm cells, the concentration of nuclei, the distribution of mitochondria, the formation of acrosome-like structures, the accumulation and disappearance of residual bodies and the presence of whole-body microtubules. type. They are embedded in the cytoplasm of supporting cells, forming a very complex picture. In this paper, the contents of acrosome-like structures and remnants are introduced, and their origin and nature are discussed.