The prevention to the large scale of the polymer bushing is performer and the attempt to the high voltage of the operating voltage is performed. A polymer bushing 1 of this invention is provided with a conductor bar 2 which is centrally arranged and has a conductor insertion hole 2a at a lower end part, a rigid insulator 3 which is provided at the outer circumference of the conductor bar 2 and has a receiving port 31a for a cable termination 7, and a polymer covering 4 which is provided at the outer circumference of the insulator 3 and that a number of shades 4a are formed separately along the longer direction at the outer circumference. Besides, a large diameter part 33 is provided at the upper part than the conductor insertion hole 2a in the neighborhood of the lower end part of the insulator 3. And, a cylindrical shielding metal fitting 6 is concentrically embedded together with the conductor bar 2 at the aforementioned large diameter part 33. Further, an electric-field stress-control layer 5 is provided at the interface between the aforementioned large diameter part 33 and the polymer covering 4.