The present invention provides an auto-balance motion-assistance vehicle frame comprising a pair of supporting frames, a front wheel frame, a rear wheel frame, a pair of balance frames and a seating frame. Each supporting frame has a curvature, and the pair of the supporting frames are separated with a distance. The front wheel frame is coupled to a first end of the supporting frames for connecting a front wheel module. The rear wheel frame is coupled to a second of the supporting frames for connecting a rear wheel module. The pair of balance frames are leaned against the front and rear wheel frames, wherein a rotating axial is arranged between the pair of the balance frames and two ends of the rotating axial are coupled to the pair of balance frames, respectively. The seating frame is arranged between the pair of supporting frames, wherein one end of the seating frame is rotabably coupled to the rotating axial, while a seat mat is coupled to another end of the seating frame. The auto-balance motion-assistance vehicle frame can be combined with manipulation device to form a green vehicle without any oil or electrical power.本發明提供一種自平衡輔助行動車架，包括有一對支撐架、前輪架、後輪架、一對平衡架以及座架。該對支撐架，具有一曲率半徑，該對支撐架之間相距一距離。該前輪架，與該支撐架的第一端相連接，該前輪架用以提供連接一對前輪組。該後輪架，與該支撐架的第二端相連接，該後輪架用以提供連接一對後輪組。該對平衡架，與該前輪架以及該後輪架相靠接，該對平衡架之間具有一轉軸，轉軸的兩端分別連接該對平衡架。該座架，設置於該對支撐架之間，該座架一端與該轉軸連接，另一端具有一坐墊。該行動車架與操控裝置結合，可以形成不需要油電的輔助行動車輛。
