Objective To retrospectively study the electrodiagnostic(EDX)abnormal features in early GBS patients. Methods The EDX recordings of all GBS patients conformed in our Neurology department from April 2012 to June 2014 were retrospectively reviewed. Patients diagnosed as GBS but no other disease by the clinical,imaging laboratory and EDX date were recruited for the study. We reviewed the EDX date of 18 GBS patients in whom EDX studies had been performed within 10 days after disease onset,and the results were c...