应用无水乙醇神经根区阻滞治疗带状疱疹后遗神经疼痛 34例 ,1次封闭明显缓解 2 0例 ( 5 8.8% ) ;2次封闭明显缓解 2 6例 ( 76.5 % ) ;两次封闭后缓解率比较 ( P>0 .0 5 ) ,差异无显著性 ;3次封闭后 34例 ( 1 0 0 % )全部获得明显缓解。分别与 1次、2次封闭后明显缓解率比较 ( P<0 .0 1 ) ,均有非常显著性差异。掌握适应证 ,熟悉操作方法 ,利多卡因与无水乙醇神经根区阻滞治疗带状疱疹后遗神经痛可获得比较满意效果 34 cases of postherpetic neuralgia were treated with absolute ethanol blockade of nerve root zone, 20 cases (5 8.8%) were significantly relieved in 1 case, 26 cases (76.5%) were obviously relieved in 2 cases and closed twice (P> 0.05). There was no significant difference between the two groups (P> 0.05). All 34 cases (100%) were significantly relieved after 3 times of closure. Respectively with 1 and 2 times after the closure of the significant response rate (P <0.01), there was a very significant difference. Grasp indications, familiar with the operation method, lidocaine and absolute ethanol blockade of nerve root block treatment of postherpetic neuralgia can be more satisfactory results