Effects of Robotic-assisted Gait Training In Non-Ambulatory Patients After Guillain-Barré Syndrome

Inclusion Criteria: * Clinical diagnosis of GBS; * Age between 18 and 65 years; * Period of GBS is between 4 and 8 weeks; * severe walking disabilities, defined as a GBS disability score of 2-4; Exclusion Criteria: * An unstable phase of disease; * Disorders preventing RAGT(eg, unstable cardiovascular, respiratory disease ,orthopedic, or neurological condition, unhealed decubitus, orthostatic hypotension etc.) ; * Severe cognitive impairment preventing meaningful communication; * Body weight more than 100 kg; * Pregnancy;