目的　探讨山羊房室束及束支的形态学特点和组织学构筑。方法　取 2 3例山羊His束及其束支的组织块 ,常规石蜡切片 ,HE、VanGieso或Masson间隔染色 ,光镜观察。结果　羊房室束长 2～ 3mm ,厚 0 .5～ 0 .75mm ,高 2～ 2 .5mm。其内传导细胞有浦肯野细胞、移行细胞和起搏细胞。结论　羊房室束与其他动物类似 ,但体积较小 ,其内传导细胞主要是浦肯野细胞 Objective To investigate the morphological characteristics and histology of goat atrioventricular bundle and bundle branch. Methods Tissue pieces from 23 cases of goat His bundle and its branches were collected and paraffin sections, HE, VanGieso or Masson interval staining were observed by light microscope. Results Sheep atrioventricular bundle length 2 ~ 3mm, thickness 0 .5 ~ 0 .75mm, height 2 ~ 2 .5mm. The inner conduction cells are Purkinje cells, transitional cells and pacemaker cells. Conclusions The sheep atrioventricular bundle is similar to other animals, but the volume is small. The inner conduction cells are mainly Purkinje cells