小肠是动物及人体内具有消化和吸收等功能的重要器官 ,而小肠绒毛则是对各种营养物质进行吸收的重要结构。为揭示绒毛内微血管的构筑与消化吸收等功能的关系 ,本文通过血管铸型、扫描电镜观察方法对大鼠小肠绒毛的微血管构筑进行了研究。材料和方法取三月龄 SD大鼠 ,乙醚麻醉后 The small intestine is an important organ with functions of digestion and absorption in animals and humans, while intestinal villus is an important structure that absorbs various nutrients. In order to reveal the relationship between the function of microvasculature and digestion and absorption in villus, the microvascular structure of villus in rat intestinal villus was studied by vascular casting and scanning electron microscopy. Materials and Methods Three-month-old SD rats were taken and anesthetized with ether