报道４２例慢性格林巴利综合征的临床和电生理特征。６例有前驱因素，发病后达高峰时间为９．４±１２．０个月；４２例均有下肢感觉异常及无力，３０例运动和感觉均受损害，１２例仅有感觉或运动障碍；有颅神经受累８例，排尿费力５例，呼吸费力３例，恶心呕吐２例；９例复发。３３例ＣＳＦ有蛋白细胞分离；２４例肌电图检查有神经原性损害，神经传导速度减慢，Ｆ波潜伏期延长或出现率下降，末端运动潜伏期延长。５例行诱发电位检查均异常 Reported 42 cases of chronic Guillain-Barre syndrome clinical and electrophysiological characteristics. 6 cases had a precursor factor, the peak time after onset was 9.4 ± 12.0 months; 42 cases had lower extremity sensory abnormalities and weakness, 30 cases of exercise and sensory impaired, 12 cases only sensory or motor dysfunction; Cranial nerve involvement in 8 cases, urination labor in 5 cases, 3 cases of respiratory distress, nausea and vomiting in 2 cases; 9 cases of recurrence. Thirty-three cases of CSF were separated by protein. The electromyogram of 24 cases had neurogenic damage, slowed the nerve conduction velocity, prolonged or decreased F-wave latency and prolonged motility latency. 5 routine evoked potential test were abnormal