应用电生理学方法观察了不同浓度的花椒浸液对蟾蜍离休神经干Ｃ类纤维动作电位幅度和传导速度的影响。结果表明：本实验所用的四种浓度的花椒浸液对Ｃ类纤维动作电位幅度和传导速度均有明显的抑制效应。而且随着花椒浸液浓度增高，动作电位消失增快，两者之间呈显著负相关（ｒ＝一０．９０９～一０．９７８，Ｐ＜０．０１）。动作电位消失后，用标准Ｒｉｎｇｅｒ液（任氏液）浸泡均可再现。 The electrophysiological methods were used to observe the effects of different concentrations of Zanthoxylum bungeanum extract on the action potential amplitude and conduction velocity of ciliary nerve fibers isolated from toad. The results showed that the four concentrations of Zanthoxylum bungeanum used in this experiment had a significant inhibitory effect on the amplitude and conduction velocity of C-type fibers. Moreover, with the increase of the concentration of Zanthoxylum Bungeanum, the disappearance of action potentials increased rapidly with a significant negative correlation (r = 0.909-1.978, P <0.01). Action potentials disappear, with standard Ringer solution (Ringer solution) can be re-soaked.