The invention relates to an electric transmission line insulator maintenance platform, and belongs to the technical field of electric transmission line maintenance equipment. The electric transmission line insulator maintenance platform comprises an angle iron fixture, a connecting rod with foot pins and an operating platform, wherein the upper end of the connecting rod is connected with the angle iron fixture, and the lower end of the connecting rod is connected with the operating platform; the operating platform comprises a base plate and a T-shaped foot reset lever articulated with one side surface of the base plate; and the angle iron fixture, the connecting rod and the operating platform are all made of an insulating hard material. Rigid connection between the maintenance platform and angle iron on the top of an iron tower can be realized by setting the angle iron fixture, so that the maintenance platform is guaranteed to be unshaken in use, the stability is higher, and the maintenance efficiency is obviously improved. All components in the invention are made of the insulating hard material, so that an electric shock risk caused by components made of metal materials can be avoided, and the work efficiency and safety are greatly improved. The electric transmission line insulator maintenance platform is simple in structure, easy to disassemble and assemble, convenient to transport and carry and high in comprehensive usability.