The present disclosure illustrates a system for guiding a blind and method thereof. In the system, a portable device is electrically coupled to a walking aid device, the walking aid device generates an obstacle signal when detecting an obstacle, an obstacle determination module may determines an obstacle width and a distance from the obstacle in accordance with the obstacle signal, and a route planning module may generate a dodging route according to the obstacle width, the obstacle distance and a user step size loaded previously. As a result, the system and the method are able to let user know about information of the front obstacle, and may achieve the effect of dodging the front obstacle safely.
