According to the classification of use scenarios, electric wheelchairs can currently be divided into indoor type, indoor and outdoor universal type, and outdoor type wheelchairs. Among the electric wheelchairs controlled by the occupants, more power steering methods are adopted. Indoor type electric wheelchair is suitable for electric wheelchair used in indoor or outdoor close range. It is lightweight, with small front wheel, and the turning radius is small and the speed is slow; Barrier capabilities are also often limited by complex terrain. The new type of intelligent wheelchair can already clarify the route and distance between the current location and the destination, and realize autonomous navigation and positioning; it can understand the short language instructions of humans just like robots, and realize human-machine dialogue, voice control, etc.