The utility model relates to a two -wheeled electrodynamic balance car, including two wheels, two frames, battery, control system and connect two frames and can make the relative pivoted slewing mechanism of two frames, its characterized in that, slewing mechanism include the axis of rotation, axis of rotation one end is equipped with at least one flange, and the other end is fixed a position through the jump ring and is installed at least one bearing or sleeve, the frame is equipped with a positioning groove corresponding position department with the flange, the frame is equipped with the 2nd positioning groove corresponding position department with bearing or sleeve. The utility model discloses two -wheeled electrodynamic balance car compact structure, reasonable in design, life is longer, and application method is simple.