The invention provides a cylinder head of an automobile engine, and belongs to the technical field of automobiles. The cylinder head solves the problem of how to reduce engine fuel consumption while lightweight design is achieved. The cylinder head comprises a cover body and a connection through hole, the cover body is provided with at least two sets of valve hole groups, supporting structures used for supporting engine camshafts are arranged on the portions, between the adjacent valve hole groups, of the cover body, a threaded bushing is in screw joint with the interior of the connection through hole, the threaded bushing is internally provided with a through hole for a small flange bolt to penetrate, and the end portion of the outer end of the threaded bushing is provided with an abutting surface used for abutting against the flange face of the small flange bolt in a contact manner. By means of the cylinder head, through the manners that the number of support structures and the contact area are decreased and the threaded bushing is designed, while the structural stiffness of the cylinder head and the camshaft shaft is not reduced, the area of a camshaft and cylinder head frictionpair is effectively reduced, the friction work is greatly reduced, the weight of the cylinder head is reduced, an engine is designed to be lightweight, and the fuel consumption and the manufacturingcost are effectively reduced.