运用形态计量方法对耐力训练后大鼠小脑Ｒｕｒｋｉｎｊｅ细胞线粒体超微结构进行了观察。结果显示，耐力训练大鼠的小脑Ｐｕｒｋｉｊｅ细胞线粒体超微结构发生了明显变化，线粒体体积增大，数目增多，嵴致密，基质电子密度增加。形态计量学显示，线粒体体密度（Ｖυ）、面密度（Ｓυ）、数密度（Ｎυ）均增加，与对照组比较，Ｐ＜０．０１，比表积减少（Ｐ＜０．０５）。 Morphometric methods were used to observe the mitochondrial ultrastructure of rat cerebellum Rurkinje after endurance training. The results showed that ultrastructures of Purkije cells in cerebellum of endurance training rats changed obviously, the volume of mitochondria increased, the number increased, the crest became dense and the electron density of matrix increased. Morphometry showed that the mitochondrial Vv, Sv and Nv increased, P <0.01 compared with the control group, and the specific surface area decreased (P <0.05).