A method of manufacturing a superconductive electric conductor is indicated, which includes as the superconductive material as ceramic material. For carrying out the method, around a plurality of flat strips (1) of a carrier coated with a superconductive ceramic material, a longitudinally entering metal band (3) is formed into a pipe having a slot extending in the longitudinal direction, where the edges located at the slot next to each other are welded together. The strips (1) are fed to the pipe with continuous change of location in such a way that each strip along the length of the conductor assumes different positions over the cross section thereof. The pipe (9) closed by the welding procedure is subsequently reduced to an interior width which corresponds approximately to an enveloping curve of all strips (1) located in the pipe.