The utility model discloses a hinge structure of automobile door, include the hinge body who comprises flat metal strip bending, hinge body's one end is horizontal to have cylindric structure, and hinge body's the other end then is provided with horizontal arc piece, and the cross section of arc piece becomes C shape structure, and the surface of arc piece links up with hinge body's one end, and the arc piece is from linking up punishment for first support and second support, and first support perpendicular to hinge body's left surface, cylindric structure are located hinge body's right flank and tangent with hinge body. Designed novel structure, the installation environment of adaptation automobile body that can be better, and structural strength is big, is difficult to take place wear deformation.