This paper is a summary of the biofeedback technology for the reflex electrical stimulation device to assist walking. The experiments showed that electrical stimulation resulted in prominent stimulation with less habituation. The research elements were an input-type brain machine interface (BMI), functional magnetic resonance imaging (f-MRI) analysis to detect brain activity, multi-channel electrical stimulation, reflex stimulation for muscle contraction, and an adaptive rehabilitation fitting to the walking gate. The results showed that neuro rehabilitation may be attained by the integration of these research elements.