应用肌电图、体感和脑干听力诱发电位对８例ＭｉｌｌｅｒＦｉｓｈｅｒ综合征患儿进行系列检查。发现７例患儿中４例出现复合肌肉动作电位波幅减低伴感觉神经动作电位不能引出，其中２例尚有运动神经传导速度减慢；２例仅有复合肌肉动作电位波幅减低；１例感觉神经动作电位波幅位于低限；３例体感诱发电位和２例脑干听力诱发电位示周围神经性损害。提示本病主要损害周围神经（以感觉神经为重）的轴索并伴有髓鞘脱失。 Eight patients with Miller Fisher syndrome were examined by electromyography, somatosensory and brainstem auditory evoked potentials. Found that in 4 of 7 children, the amplitude of compound muscle action potentials decreased and the sensory nerve action potentials could not be induced. In 2 of them, the motor nerve conduction velocity was slowed down. The amplitude of compound muscle action potentials decreased in 2 patients and decreased in 1 patient The action potential amplitude was at the lower limit; 3 somatosensory evoked potentials and 2 brainstem auditory evoked potentials showed peripheral nerve damage. Tip of the main damage to the peripheral nerve (to the sensory nerve-weighted) axonal accompanied by demyelination.